Home / 87,955.45-131,947.19-31,789.87

Finding the Fourth Proportional to 87,955.45, 131,947.19 and 31,789.87

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Solution

The fourth proportional to 87,955.45, 131,947.19 and 31,789.87 is: 47,689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,955.45 : 131,947.19 = 31,789.87 : x
  2. Step 2: Convert to fraction form
    87,955.45/131,947.19 = 31,789.87/x
  3. Step 3: Cross multiply
    87,955.45x = 131,947.19 × 31,789.87
  4. Step 4: Simplify right side
    87,955.45x = 4,194,584,016.97
  5. Step 5: Solve for x
    x = 4,194,584,016.97/87,955.45
  6. Step 6: Final answer
    x = 47,689.87

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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.