Finding the Fourth Proportional to 66,431,767.96, 91,673,761.26 and 38,948,001.40
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Solution
The fourth proportional to 66,431,767.96, 91,673,761.26 and 38,948,001.40 is: 53,747,023.32
Step by Step Solution
- Step 1: Write the proportion equation
66,431,767.96 : 91,673,761.26 = 38,948,001.40 : x - Step 2: Convert to fraction form
66,431,767.96/91,673,761.26 = 38,948,001.40/x - Step 3: Cross multiply
66,431,767.96x = 91,673,761.26 × 38,948,001.40 - Step 4: Simplify right side
66,431,767.96x = 3,570,509,781,897,746 - Step 5: Solve for x
x = 3,570,509,781,897,746/66,431,767.96 - Step 6: Final answer
x = 53,747,023.32
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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.