Finding the Fourth Proportional to 31,439,874.96, 47,159,812.44 and 8,720,772.21
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Solution
The fourth proportional to 31,439,874.96, 47,159,812.44 and 8,720,772.21 is: 13,081,158.32
Step by Step Solution
- Step 1: Write the proportion equation
31,439,874.96 : 47,159,812.44 = 8,720,772.21 : x - Step 2: Convert to fraction form
31,439,874.96/47,159,812.44 = 8,720,772.21/x - Step 3: Cross multiply
31,439,874.96x = 47,159,812.44 × 8,720,772.21 - Step 4: Simplify right side
31,439,874.96x = 411,269,981,755,564.31 - Step 5: Solve for x
x = 411,269,981,755,564.31/31,439,874.96 - Step 6: Final answer
x = 13,081,158.32
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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.