Home / 87,424.95-131,105.30-31,249.90

Finding the Fourth Proportional to 87,424.95, 131,105.30 and 31,249.90

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Solution

The fourth proportional to 87,424.95, 131,105.30 and 31,249.90 is: 46,863.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,424.95 : 131,105.30 = 31,249.90 : x
  2. Step 2: Convert to fraction form
    87,424.95/131,105.30 = 31,249.90/x
  3. Step 3: Cross multiply
    87,424.95x = 131,105.30 × 31,249.90
  4. Step 4: Simplify right side
    87,424.95x = 4,097,027,030.46
  5. Step 5: Solve for x
    x = 4,097,027,030.46/87,424.95
  6. Step 6: Final answer
    x = 46,863.36

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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.