Home / 87,520.40-131,290.20-32,128.40

Finding the Fourth Proportional to 87,520.40, 131,290.20 and 32,128.40

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Solution

The fourth proportional to 87,520.40, 131,290.20 and 32,128.40 is: 48,196.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,520.40 : 131,290.20 = 32,128.40 : x
  2. Step 2: Convert to fraction form
    87,520.40/131,290.20 = 32,128.40/x
  3. Step 3: Cross multiply
    87,520.40x = 131,290.20 × 32,128.40
  4. Step 4: Simplify right side
    87,520.40x = 4,218,144,061.68
  5. Step 5: Solve for x
    x = 4,218,144,061.68/87,520.40
  6. Step 6: Final answer
    x = 48,196.12

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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.