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Finding the Fourth Proportional to 71,757.22, 99,016.05 and 39,923.86

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Solution

The fourth proportional to 71,757.22, 99,016.05 and 39,923.86 is: 55,089.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,757.22 : 99,016.05 = 39,923.86 : x
  2. Step 2: Convert to fraction form
    71,757.22/99,016.05 = 39,923.86/x
  3. Step 3: Cross multiply
    71,757.22x = 99,016.05 × 39,923.86
  4. Step 4: Simplify right side
    71,757.22x = 3,953,102,917.95
  5. Step 5: Solve for x
    x = 3,953,102,917.95/71,757.22
  6. Step 6: Final answer
    x = 55,089.97

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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.