Finding the Fourth Proportional to 81,545,730.22, 122,175,105.99 and 76,691,017.90
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Solution
The fourth proportional to 81,545,730.22, 122,175,105.99 and 76,691,017.90 is: 114,901,579.95
Step by Step Solution
- Step 1: Write the proportion equation
81,545,730.22 : 122,175,105.99 = 76,691,017.90 : x - Step 2: Convert to fraction form
81,545,730.22/122,175,105.99 = 76,691,017.90/x - Step 3: Cross multiply
81,545,730.22x = 122,175,105.99 × 76,691,017.90 - Step 4: Simplify right side
81,545,730.22x = 9,369,733,240,413,488 - Step 5: Solve for x
x = 9,369,733,240,413,488/81,545,730.22 - Step 6: Final answer
x = 114,901,579.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.