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Finding the Fourth Proportional to 80,596.96, 120,895.28 and 21,432.62

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Solution

The fourth proportional to 80,596.96, 120,895.28 and 21,432.62 is: 32,148.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,596.96 : 120,895.28 = 21,432.62 : x
  2. Step 2: Convert to fraction form
    80,596.96/120,895.28 = 21,432.62/x
  3. Step 3: Cross multiply
    80,596.96x = 120,895.28 × 21,432.62
  4. Step 4: Simplify right side
    80,596.96x = 2,591,102,596.03
  5. Step 5: Solve for x
    x = 2,591,102,596.03/80,596.96
  6. Step 6: Final answer
    x = 32,148.89

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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.