Home / 87,425.60-131,135.29-28,259.72

Finding the Fourth Proportional to 87,425.60, 131,135.29 and 28,259.72

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Solution

The fourth proportional to 87,425.60, 131,135.29 and 28,259.72 is: 42,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,425.60 : 131,135.29 = 28,259.72 : x
  2. Step 2: Convert to fraction form
    87,425.60/131,135.29 = 28,259.72/x
  3. Step 3: Cross multiply
    87,425.60x = 131,135.29 × 28,259.72
  4. Step 4: Simplify right side
    87,425.60x = 3,705,846,342.95
  5. Step 5: Solve for x
    x = 3,705,846,342.95/87,425.60
  6. Step 6: Final answer
    x = 42,388.57

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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.