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Finding the Fourth Proportional to 88,408.80, 132,613.20 and 60,415.20

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Solution

The fourth proportional to 88,408.80, 132,613.20 and 60,415.20 is: 90,622.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,408.80 : 132,613.20 = 60,415.20 : x
  2. Step 2: Convert to fraction form
    88,408.80/132,613.20 = 60,415.20/x
  3. Step 3: Cross multiply
    88,408.80x = 132,613.20 × 60,415.20
  4. Step 4: Simplify right side
    88,408.80x = 8,011,853,000.64
  5. Step 5: Solve for x
    x = 8,011,853,000.64/88,408.80
  6. Step 6: Final answer
    x = 90,622.80

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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.