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Finding the Fourth Proportional to 88,372.96, 132,559.44 and 72,757.78

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Solution

The fourth proportional to 88,372.96, 132,559.44 and 72,757.78 is: 109,136.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,372.96 : 132,559.44 = 72,757.78 : x
  2. Step 2: Convert to fraction form
    88,372.96/132,559.44 = 72,757.78/x
  3. Step 3: Cross multiply
    88,372.96x = 132,559.44 × 72,757.78
  4. Step 4: Simplify right side
    88,372.96x = 9,644,729,968.20
  5. Step 5: Solve for x
    x = 9,644,729,968.20/88,372.96
  6. Step 6: Final answer
    x = 109,136.67

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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.