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Finding the Fourth Proportional to 101,508.78, 140,081.40 and 58,472.58

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Solution

The fourth proportional to 101,508.78, 140,081.40 and 58,472.58 is: 80,691.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,508.78 : 140,081.40 = 58,472.58 : x
  2. Step 2: Convert to fraction form
    101,508.78/140,081.40 = 58,472.58/x
  3. Step 3: Cross multiply
    101,508.78x = 140,081.40 × 58,472.58
  4. Step 4: Simplify right side
    101,508.78x = 8,190,920,868.01
  5. Step 5: Solve for x
    x = 8,190,920,868.01/101,508.78
  6. Step 6: Final answer
    x = 80,691.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.