Home / 87,341.78-131,028.96-28,171.28

Finding the Fourth Proportional to 87,341.78, 131,028.96 and 28,171.28

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Solution

The fourth proportional to 87,341.78, 131,028.96 and 28,171.28 is: 42,262.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,341.78 : 131,028.96 = 28,171.28 : x
  2. Step 2: Convert to fraction form
    87,341.78/131,028.96 = 28,171.28/x
  3. Step 3: Cross multiply
    87,341.78x = 131,028.96 × 28,171.28
  4. Step 4: Simplify right side
    87,341.78x = 3,691,253,520.27
  5. Step 5: Solve for x
    x = 3,691,253,520.27/87,341.78
  6. Step 6: Final answer
    x = 42,262.17

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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.