Home / 87,896.20-131,818.70-31,729.80

Finding the Fourth Proportional to 87,896.20, 131,818.70 and 31,729.80

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Solution

The fourth proportional to 87,896.20, 131,818.70 and 31,729.80 is: 47,585.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,896.20 : 131,818.70 = 31,729.80 : x
  2. Step 2: Convert to fraction form
    87,896.20/131,818.70 = 31,729.80/x
  3. Step 3: Cross multiply
    87,896.20x = 131,818.70 × 31,729.80
  4. Step 4: Simplify right side
    87,896.20x = 4,182,580,987.26
  5. Step 5: Solve for x
    x = 4,182,580,987.26/87,896.20
  6. Step 6: Final answer
    x = 47,585.46

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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.