Home / 87,541.20-131,344.20-28,378.80

Finding the Fourth Proportional to 87,541.20, 131,344.20 and 28,378.80

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Solution

The fourth proportional to 87,541.20, 131,344.20 and 28,378.80 is: 42,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,541.20 : 131,344.20 = 28,378.80 : x
  2. Step 2: Convert to fraction form
    87,541.20/131,344.20 = 28,378.80/x
  3. Step 3: Cross multiply
    87,541.20x = 131,344.20 × 28,378.80
  4. Step 4: Simplify right side
    87,541.20x = 3,727,390,782.96
  5. Step 5: Solve for x
    x = 3,727,390,782.96/87,541.20
  6. Step 6: Final answer
    x = 42,578.70

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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.