Home / 87,750.30-131,625.45-72,003.90

Finding the Fourth Proportional to 87,750.30, 131,625.45 and 72,003.90

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Solution

The fourth proportional to 87,750.30, 131,625.45 and 72,003.90 is: 108,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,750.30 : 131,625.45 = 72,003.90 : x
  2. Step 2: Convert to fraction form
    87,750.30/131,625.45 = 72,003.90/x
  3. Step 3: Cross multiply
    87,750.30x = 131,625.45 × 72,003.90
  4. Step 4: Simplify right side
    87,750.30x = 9,477,545,739.26
  5. Step 5: Solve for x
    x = 9,477,545,739.26/87,750.30
  6. Step 6: Final answer
    x = 108,005.85

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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.