Home / 87,451.21-131,180.92-28,291.51

Finding the Fourth Proportional to 87,451.21, 131,180.92 and 28,291.51

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Solution

The fourth proportional to 87,451.21, 131,180.92 and 28,291.51 is: 42,438.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,451.21 : 131,180.92 = 28,291.51 : x
  2. Step 2: Convert to fraction form
    87,451.21/131,180.92 = 28,291.51/x
  3. Step 3: Cross multiply
    87,451.21x = 131,180.92 × 28,291.51
  4. Step 4: Simplify right side
    87,451.21x = 3,711,306,403.24
  5. Step 5: Solve for x
    x = 3,711,306,403.24/87,451.21
  6. Step 6: Final answer
    x = 42,438.59

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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.