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Finding the Fourth Proportional to 27,318,687.80, 40,978,031.70 and 25,751,046.20

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Solution

The fourth proportional to 27,318,687.80, 40,978,031.70 and 25,751,046.20 is: 38,626,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,318,687.80 : 40,978,031.70 = 25,751,046.20 : x
  2. Step 2: Convert to fraction form
    27,318,687.80/40,978,031.70 = 25,751,046.20/x
  3. Step 3: Cross multiply
    27,318,687.80x = 40,978,031.70 × 25,751,046.20
  4. Step 4: Simplify right side
    27,318,687.80x = 1,055,227,187,491,764.62
  5. Step 5: Solve for x
    x = 1,055,227,187,491,764.62/27,318,687.80
  6. Step 6: Final answer
    x = 38,626,569.30

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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.