Home / 87,680.87-131,540.78-40,908.23

Finding the Fourth Proportional to 87,680.87, 131,540.78 and 40,908.23

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Solution

The fourth proportional to 87,680.87, 131,540.78 and 40,908.23 is: 61,371.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,680.87 : 131,540.78 = 40,908.23 : x
  2. Step 2: Convert to fraction form
    87,680.87/131,540.78 = 40,908.23/x
  3. Step 3: Cross multiply
    87,680.87x = 131,540.78 × 40,908.23
  4. Step 4: Simplify right side
    87,680.87x = 5,381,100,278.08
  5. Step 5: Solve for x
    x = 5,381,100,278.08/87,680.87
  6. Step 6: Final answer
    x = 61,371.43

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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.