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Finding the Fourth Proportional to 56,932.78, 85,398.96 and 15,379.78

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Solution

The fourth proportional to 56,932.78, 85,398.96 and 15,379.78 is: 23,069.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,932.78 : 85,398.96 = 15,379.78 : x
  2. Step 2: Convert to fraction form
    56,932.78/85,398.96 = 15,379.78/x
  3. Step 3: Cross multiply
    56,932.78x = 85,398.96 × 15,379.78
  4. Step 4: Simplify right side
    56,932.78x = 1,313,417,217.03
  5. Step 5: Solve for x
    x = 1,313,417,217.03/56,932.78
  6. Step 6: Final answer
    x = 23,069.61

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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.