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Finding the Fourth Proportional to 80,608.67, 120,915.70 and 36,235.55

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Solution

The fourth proportional to 80,608.67, 120,915.70 and 36,235.55 is: 54,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,608.67 : 120,915.70 = 36,235.55 : x
  2. Step 2: Convert to fraction form
    80,608.67/120,915.70 = 36,235.55/x
  3. Step 3: Cross multiply
    80,608.67x = 120,915.70 × 36,235.55
  4. Step 4: Simplify right side
    80,608.67x = 4,381,447,308.66
  5. Step 5: Solve for x
    x = 4,381,447,308.66/80,608.67
  6. Step 6: Final answer
    x = 54,354.54

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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.