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Finding the Fourth Proportional to 101,761.44, 140,429.88 and 57,049.44

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Solution

The fourth proportional to 101,761.44, 140,429.88 and 57,049.44 is: 78,727.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,761.44 : 140,429.88 = 57,049.44 : x
  2. Step 2: Convert to fraction form
    101,761.44/140,429.88 = 57,049.44/x
  3. Step 3: Cross multiply
    101,761.44x = 140,429.88 × 57,049.44
  4. Step 4: Simplify right side
    101,761.44x = 8,011,446,013.27
  5. Step 5: Solve for x
    x = 8,011,446,013.27/101,761.44
  6. Step 6: Final answer
    x = 78,727.72

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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.