Finding the Fourth Proportional to 81,660,206.80, 122,490,310.20 and 36,222,001.30
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Solution
The fourth proportional to 81,660,206.80, 122,490,310.20 and 36,222,001.30 is: 54,333,001.95
Step by Step Solution
- Step 1: Write the proportion equation
81,660,206.80 : 122,490,310.20 = 36,222,001.30 : x - Step 2: Convert to fraction form
81,660,206.80/122,490,310.20 = 36,222,001.30/x - Step 3: Cross multiply
81,660,206.80x = 122,490,310.20 × 36,222,001.30 - Step 4: Simplify right side
81,660,206.80x = 4,436,844,175,301,803 - Step 5: Solve for x
x = 4,436,844,175,301,803/81,660,206.80 - Step 6: Final answer
x = 54,333,001.95
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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.