Home / 87,325.20-131,045.40-31,921.20

Finding the Fourth Proportional to 87,325.20, 131,045.40 and 31,921.20

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Solution

The fourth proportional to 87,325.20, 131,045.40 and 31,921.20 is: 47,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,325.20 : 131,045.40 = 31,921.20 : x
  2. Step 2: Convert to fraction form
    87,325.20/131,045.40 = 31,921.20/x
  3. Step 3: Cross multiply
    87,325.20x = 131,045.40 × 31,921.20
  4. Step 4: Simplify right side
    87,325.20x = 4,183,126,422.48
  5. Step 5: Solve for x
    x = 4,183,126,422.48/87,325.20
  6. Step 6: Final answer
    x = 47,902.86

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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.