Question

Find the value of x for which 4, x, 9 and 72 are in

proportion.​

Answer 1

Step-by-step explanation:

25,30,x & 72 are in proportion

i.e,

30

25

=

72

x

⇒x=72×

30

25

x=

(6×5)

(12×6)×(5×5)

x=12×5

x=60

Answer 2

:$\implies$ $\sf\dfrac{4}{x}$ = $\sf\dfrac{9}{72}$

:$\implies$$\sf\dfrac{4×72}{9}$ = ${\sf x}$

:$\implies$${\: 32}$ = ${\sf x}$