Finding the Fourth Proportional to 72,485,024.80, 108,727,537.20 and 69,125,792.80
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Solution
The fourth proportional to 72,485,024.80, 108,727,537.20 and 69,125,792.80 is: 103,688,689.20
Step by Step Solution
- Step 1: Write the proportion equation
72,485,024.80 : 108,727,537.20 = 69,125,792.80 : x - Step 2: Convert to fraction form
72,485,024.80/108,727,537.20 = 69,125,792.80/x - Step 3: Cross multiply
72,485,024.80x = 108,727,537.20 × 69,125,792.80 - Step 4: Simplify right side
72,485,024.80x = 7,515,877,208,141,492 - Step 5: Solve for x
x = 7,515,877,208,141,492/72,485,024.80 - Step 6: Final answer
x = 103,688,689.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.