Home / 87,612.80-131,465.10-40,242.20

Finding the Fourth Proportional to 87,612.80, 131,465.10 and 40,242.20

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Solution

The fourth proportional to 87,612.80, 131,465.10 and 40,242.20 is: 60,384.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,612.80 : 131,465.10 = 40,242.20 : x
  2. Step 2: Convert to fraction form
    87,612.80/131,465.10 = 40,242.20/x
  3. Step 3: Cross multiply
    87,612.80x = 131,465.10 × 40,242.20
  4. Step 4: Simplify right side
    87,612.80x = 5,290,444,847.22
  5. Step 5: Solve for x
    x = 5,290,444,847.22/87,612.80
  6. Step 6: Final answer
    x = 60,384.38

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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.