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Finding the Fourth Proportional to 56,917.20, 85,424.40 and 25,375.80

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Solution

The fourth proportional to 56,917.20, 85,424.40 and 25,375.80 is: 38,085.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,917.20 : 85,424.40 = 25,375.80 : x
  2. Step 2: Convert to fraction form
    56,917.20/85,424.40 = 25,375.80/x
  3. Step 3: Cross multiply
    56,917.20x = 85,424.40 × 25,375.80
  4. Step 4: Simplify right side
    56,917.20x = 2,167,712,489.52
  5. Step 5: Solve for x
    x = 2,167,712,489.52/56,917.20
  6. Step 6: Final answer
    x = 38,085.37

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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.