Home / 87,945.30-131,723.55-72,393.30

Finding the Fourth Proportional to 87,945.30, 131,723.55 and 72,393.30

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Solution

The fourth proportional to 87,945.30, 131,723.55 and 72,393.30 is: 108,429.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,945.30 : 131,723.55 = 72,393.30 : x
  2. Step 2: Convert to fraction form
    87,945.30/131,723.55 = 72,393.30/x
  3. Step 3: Cross multiply
    87,945.30x = 131,723.55 × 72,393.30
  4. Step 4: Simplify right side
    87,945.30x = 9,535,902,472.22
  5. Step 5: Solve for x
    x = 9,535,902,472.22/87,945.30
  6. Step 6: Final answer
    x = 108,429.93

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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.