Home / 87,724.40-131,435.40-40,881.20

Finding the Fourth Proportional to 87,724.40, 131,435.40 and 40,881.20

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Solution

The fourth proportional to 87,724.40, 131,435.40 and 40,881.20 is: 61,251.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,724.40 : 131,435.40 = 40,881.20 : x
  2. Step 2: Convert to fraction form
    87,724.40/131,435.40 = 40,881.20/x
  3. Step 3: Cross multiply
    87,724.40x = 131,435.40 × 40,881.20
  4. Step 4: Simplify right side
    87,724.40x = 5,373,236,874.48
  5. Step 5: Solve for x
    x = 5,373,236,874.48/87,724.40
  6. Step 6: Final answer
    x = 61,251.34

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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.