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Finding the Fourth Proportional to 80,586.89, 120,847.53 and 36,201.72

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Solution

The fourth proportional to 80,586.89, 120,847.53 and 36,201.72 is: 54,287.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,586.89 : 120,847.53 = 36,201.72 : x
  2. Step 2: Convert to fraction form
    80,586.89/120,847.53 = 36,201.72/x
  3. Step 3: Cross multiply
    80,586.89x = 120,847.53 × 36,201.72
  4. Step 4: Simplify right side
    80,586.89x = 4,374,888,443.75
  5. Step 5: Solve for x
    x = 4,374,888,443.75/80,586.89
  6. Step 6: Final answer
    x = 54,287.84

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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.