Finding the Fourth Proportional to 72,234,946.97, 99,679,319.38 and 39,641,998.49
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Solution
The fourth proportional to 72,234,946.97, 99,679,319.38 and 39,641,998.49 is: 54,703,264.75
Step by Step Solution
- Step 1: Write the proportion equation
72,234,946.97 : 99,679,319.38 = 39,641,998.49 : x - Step 2: Convert to fraction form
72,234,946.97/99,679,319.38 = 39,641,998.49/x - Step 3: Cross multiply
72,234,946.97x = 99,679,319.38 × 39,641,998.49 - Step 4: Simplify right side
72,234,946.97x = 3,951,487,428,147,978 - Step 5: Solve for x
x = 3,951,487,428,147,978/72,234,946.97 - Step 6: Final answer
x = 54,703,264.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.