METODE GEOMETRIK

1.  

Diket:                                             

Pn              = 237.641.000

R                 = 1,4% = 0,014

N                = 2015 – 2010 = 5

Ditanya: Pn......?

Jawab:

Pn              = 237.641.000 jiwa (1+0,014)⁵

                   = 237.641.000 jiwa (1,014)⁵

                   = 237.641.000 jiwa (1,071)

                   = 254,513,511 jiwa

2.  

Po     = 3.457.491 jiwa

R       = 1,6 % = 0,016

N      = 2020 – 2011 = 9

Ditanya : Pn = ....?

Jawab:

Pn     = 3.457.491 jiwa (1+ 0,016)⁹

 = 3.457.491 jiwa ( 1,016 )⁹

 = 3.457.49 1jiwa (1,53 )

 = 3.988,452 jiwa

3.  

Po     = 178.631.196 jiwa

R       = 1,49 % = 0,0149

N      = 2010 – 1990 = 20

Ditanya: Pn = .....?

Jawab:

Pn     = 178.631.196 jiwa ( 1+0,0149)²⁰

          = 178.631.196 jiwa ( 1,0149 )²⁰

          = 178.631.196 jiwa ( 1,03442)

          = 240,116,053 jiwa

METODE EKSPONENSIAL

1.   Diket :

Po                   = 850.645 jiwa

R                      = 1,5 % = 0,015

E                       = 2,71828

N                     = 2015 – 2010 = 5

Ditanya: Pn = ......?

Dawab:

Pn                   = 850.645 jiwa x 2,71828^(0,015 x 5)

                        = 850.645 jiwa x 2,71828^(0,075 )

= 850.645 jiwa x 1, 077.884

= 916,896 jiwa

2.   Diket:

Po                   = 45.901 jiwa

E                      = 2,71828

R                      = 2,01 % = 0,0201

N                     = 2020 – 2010 = 10

Ditanya : Pn = .......?

Jawab:

Pn                   = 45.901 jiwa x 2,71828^(0,0201 x 10 )

                         = 45.901 jiwa x 2,71828^( 0,201)

                        = 45.901 jiwa x 1,22

                        = 55,999,22 jiwa