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Finding the Fourth Proportional to 41,986.76, 62,978.31 and 15,691.73

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Solution

The fourth proportional to 41,986.76, 62,978.31 and 15,691.73 is: 23,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,986.76 : 62,978.31 = 15,691.73 : x
  2. Step 2: Convert to fraction form
    41,986.76/62,978.31 = 15,691.73/x
  3. Step 3: Cross multiply
    41,986.76x = 62,978.31 × 15,691.73
  4. Step 4: Simplify right side
    41,986.76x = 988,238,321.48
  5. Step 5: Solve for x
    x = 988,238,321.48/41,986.76
  6. Step 6: Final answer
    x = 23,536.91

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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.