Home / 87,489.68-131,255.30-28,325.32

Finding the Fourth Proportional to 87,489.68, 131,255.30 and 28,325.32

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Solution

The fourth proportional to 87,489.68, 131,255.30 and 28,325.32 is: 42,494.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,489.68 : 131,255.30 = 28,325.32 : x
  2. Step 2: Convert to fraction form
    87,489.68/131,255.30 = 28,325.32/x
  3. Step 3: Cross multiply
    87,489.68x = 131,255.30 × 28,325.32
  4. Step 4: Simplify right side
    87,489.68x = 3,717,848,374.20
  5. Step 5: Solve for x
    x = 3,717,848,374.20/87,489.68
  6. Step 6: Final answer
    x = 42,494.71

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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.