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Finding the Fourth Proportional to 88,077.60, 132,375.60 and 76,672.80

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Solution

The fourth proportional to 88,077.60, 132,375.60 and 76,672.80 is: 115,234.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,077.60 : 132,375.60 = 76,672.80 : x
  2. Step 2: Convert to fraction form
    88,077.60/132,375.60 = 76,672.80/x
  3. Step 3: Cross multiply
    88,077.60x = 132,375.60 × 76,672.80
  4. Step 4: Simplify right side
    88,077.60x = 10,149,607,903.68
  5. Step 5: Solve for x
    x = 10,149,607,903.68/88,077.60
  6. Step 6: Final answer
    x = 115,234.84

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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.