Home / 87,541.56-131,335.65-31,387.28

Finding the Fourth Proportional to 87,541.56, 131,335.65 and 31,387.28

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Solution

The fourth proportional to 87,541.56, 131,335.65 and 31,387.28 is: 47,089.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,541.56 : 131,335.65 = 31,387.28 : x
  2. Step 2: Convert to fraction form
    87,541.56/131,335.65 = 31,387.28/x
  3. Step 3: Cross multiply
    87,541.56x = 131,335.65 × 31,387.28
  4. Step 4: Simplify right side
    87,541.56x = 4,122,268,163.85
  5. Step 5: Solve for x
    x = 4,122,268,163.85/87,541.56
  6. Step 6: Final answer
    x = 47,089.27

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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.