Home / 87,630.60-131,445.90-72,856.20

Finding the Fourth Proportional to 87,630.60, 131,445.90 and 72,856.20

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Solution

The fourth proportional to 87,630.60, 131,445.90 and 72,856.20 is: 109,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,630.60 : 131,445.90 = 72,856.20 : x
  2. Step 2: Convert to fraction form
    87,630.60/131,445.90 = 72,856.20/x
  3. Step 3: Cross multiply
    87,630.60x = 131,445.90 × 72,856.20
  4. Step 4: Simplify right side
    87,630.60x = 9,576,648,779.58
  5. Step 5: Solve for x
    x = 9,576,648,779.58/87,630.60
  6. Step 6: Final answer
    x = 109,284.30

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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.