Finding the Fourth Proportional to 87,868,508.88, 121,257,901.26 and 48,175,384.92
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Solution
The fourth proportional to 87,868,508.88, 121,257,901.26 and 48,175,384.92 is: 66,481,679.75
Step by Step Solution
- Step 1: Write the proportion equation
87,868,508.88 : 121,257,901.26 = 48,175,384.92 : x - Step 2: Convert to fraction form
87,868,508.88/121,257,901.26 = 48,175,384.92/x - Step 3: Cross multiply
87,868,508.88x = 121,257,901.26 × 48,175,384.92 - Step 4: Simplify right side
87,868,508.88x = 5,841,646,067,791,853 - Step 5: Solve for x
x = 5,841,646,067,791,853/87,868,508.88 - Step 6: Final answer
x = 66,481,679.75
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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.