Finding the Fourth Proportional to 115,917,974.64, 159,970,641.33 and 63,708,860.88
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Solution
The fourth proportional to 115,917,974.64, 159,970,641.33 and 63,708,860.88 is: 87,920,336.47
Step by Step Solution
- Step 1: Write the proportion equation
115,917,974.64 : 159,970,641.33 = 63,708,860.88 : x - Step 2: Convert to fraction form
115,917,974.64/159,970,641.33 = 63,708,860.88/x - Step 3: Cross multiply
115,917,974.64x = 159,970,641.33 × 63,708,860.88 - Step 4: Simplify right side
115,917,974.64x = 10,191,547,333,377,350 - Step 5: Solve for x
x = 10,191,547,333,377,350/115,917,974.64 - Step 6: Final answer
x = 87,920,336.47
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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.