Home / 87,451.41-131,181.21-28,291.71

Finding the Fourth Proportional to 87,451.41, 131,181.21 and 28,291.71

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Solution

The fourth proportional to 87,451.41, 131,181.21 and 28,291.71 is: 42,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,451.41 : 131,181.21 = 28,291.71 : x
  2. Step 2: Convert to fraction form
    87,451.41/131,181.21 = 28,291.71/x
  3. Step 3: Cross multiply
    87,451.41x = 131,181.21 × 28,291.71
  4. Step 4: Simplify right side
    87,451.41x = 3,711,340,750.77
  5. Step 5: Solve for x
    x = 3,711,340,750.77/87,451.41
  6. Step 6: Final answer
    x = 42,438.89

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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.