Home / 87,350.76-131,021.49-28,186.47

Finding the Fourth Proportional to 87,350.76, 131,021.49 and 28,186.47

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Solution

The fourth proportional to 87,350.76, 131,021.49 and 28,186.47 is: 42,278.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,350.76 : 131,021.49 = 28,186.47 : x
  2. Step 2: Convert to fraction form
    87,350.76/131,021.49 = 28,186.47/x
  3. Step 3: Cross multiply
    87,350.76x = 131,021.49 × 28,186.47
  4. Step 4: Simplify right side
    87,350.76x = 3,693,033,297.24
  5. Step 5: Solve for x
    x = 3,693,033,297.24/87,350.76
  6. Step 6: Final answer
    x = 42,278.20

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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.