Finding the Fourth Proportional to 81,615,934.80, 122,423,902.20 and 27,763,246.80
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Solution
The fourth proportional to 81,615,934.80, 122,423,902.20 and 27,763,246.80 is: 41,644,870.20
Step by Step Solution
- Step 1: Write the proportion equation
81,615,934.80 : 122,423,902.20 = 27,763,246.80 : x - Step 2: Convert to fraction form
81,615,934.80/122,423,902.20 = 27,763,246.80/x - Step 3: Cross multiply
81,615,934.80x = 122,423,902.20 × 27,763,246.80 - Step 4: Simplify right side
81,615,934.80x = 3,398,885,010,997,663 - Step 5: Solve for x
x = 3,398,885,010,997,663/81,615,934.80 - Step 6: Final answer
x = 41,644,870.20
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1.5x scale
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.