Answer:
312.50
Explanation:
8 , 20 , 50, 125 , 312.50
First term, a = 8
Second term, ar = 20
Find common ratio, r
Substitute a = 8 into second equation
ar = 20
8r = 20
r = 20/8
r = 2.5
Find the fifth term
ar⁴
= 8 * 2.5⁴
= 8 * 39.0625
= 312.50
Fifth term, ar⁴ = 312.50