Home / 87,540.24-131,322.51-28,356.78

Finding the Fourth Proportional to 87,540.24, 131,322.51 and 28,356.78

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Solution

The fourth proportional to 87,540.24, 131,322.51 and 28,356.78 is: 42,539.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,540.24 : 131,322.51 = 28,356.78 : x
  2. Step 2: Convert to fraction form
    87,540.24/131,322.51 = 28,356.78/x
  3. Step 3: Cross multiply
    87,540.24x = 131,322.51 × 28,356.78
  4. Step 4: Simplify right side
    87,540.24x = 3,723,883,525.12
  5. Step 5: Solve for x
    x = 3,723,883,525.12/87,540.24
  6. Step 6: Final answer
    x = 42,539.11

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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.