Home / 87,612.20-131,450.70-28,449.80

Finding the Fourth Proportional to 87,612.20, 131,450.70 and 28,449.80

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Solution

The fourth proportional to 87,612.20, 131,450.70 and 28,449.80 is: 42,685.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,612.20 : 131,450.70 = 28,449.80 : x
  2. Step 2: Convert to fraction form
    87,612.20/131,450.70 = 28,449.80/x
  3. Step 3: Cross multiply
    87,612.20x = 131,450.70 × 28,449.80
  4. Step 4: Simplify right side
    87,612.20x = 3,739,746,124.86
  5. Step 5: Solve for x
    x = 3,739,746,124.86/87,612.20
  6. Step 6: Final answer
    x = 42,685.22

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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.