Finding the Fourth Proportional to 91,514,689.75, 126,328,920.37 and 61,785,612.05
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Solution
The fourth proportional to 91,514,689.75, 126,328,920.37 and 61,785,612.05 is: 85,290,237.95
Step by Step Solution
- Step 1: Write the proportion equation
91,514,689.75 : 126,328,920.37 = 61,785,612.05 : x - Step 2: Convert to fraction form
91,514,689.75/126,328,920.37 = 61,785,612.05/x - Step 3: Cross multiply
91,514,689.75x = 126,328,920.37 × 61,785,612.05 - Step 4: Simplify right side
91,514,689.75x = 7,805,309,664,600,654 - Step 5: Solve for x
x = 7,805,309,664,600,654/91,514,689.75 - Step 6: Final answer
x = 85,290,237.95
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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.