Home / 87,340.32-131,038.18-31,179.20

Finding the Fourth Proportional to 87,340.32, 131,038.18 and 31,179.20

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Solution

The fourth proportional to 87,340.32, 131,038.18 and 31,179.20 is: 46,778.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,340.32 : 131,038.18 = 31,179.20 : x
  2. Step 2: Convert to fraction form
    87,340.32/131,038.18 = 31,179.20/x
  3. Step 3: Cross multiply
    87,340.32x = 131,038.18 × 31,179.20
  4. Step 4: Simplify right side
    87,340.32x = 4,085,664,966.67
  5. Step 5: Solve for x
    x = 4,085,664,966.67/87,340.32
  6. Step 6: Final answer
    x = 46,778.68

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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.