Home / 87,672.10-131,520.30-31,498.60

Finding the Fourth Proportional to 87,672.10, 131,520.30 and 31,498.60

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Solution

The fourth proportional to 87,672.10, 131,520.30 and 31,498.60 is: 47,252.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,672.10 : 131,520.30 = 31,498.60 : x
  2. Step 2: Convert to fraction form
    87,672.10/131,520.30 = 31,498.60/x
  3. Step 3: Cross multiply
    87,672.10x = 131,520.30 × 31,498.60
  4. Step 4: Simplify right side
    87,672.10x = 4,142,705,321.58
  5. Step 5: Solve for x
    x = 4,142,705,321.58/87,672.10
  6. Step 6: Final answer
    x = 47,252.27

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1.5x scale

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.