Home / 87,837.80-131,562.30-72,285.80

Finding the Fourth Proportional to 87,837.80, 131,562.30 and 72,285.80

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Solution

The fourth proportional to 87,837.80, 131,562.30 and 72,285.80 is: 108,268.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,837.80 : 131,562.30 = 72,285.80 : x
  2. Step 2: Convert to fraction form
    87,837.80/131,562.30 = 72,285.80/x
  3. Step 3: Cross multiply
    87,837.80x = 131,562.30 × 72,285.80
  4. Step 4: Simplify right side
    87,837.80x = 9,510,086,105.34
  5. Step 5: Solve for x
    x = 9,510,086,105.34/87,837.80
  6. Step 6: Final answer
    x = 108,268.72

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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.