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Finding the Fourth Proportional to 80,962.40, 121,414.80 and 36,610.40

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Solution

The fourth proportional to 80,962.40, 121,414.80 and 36,610.40 is: 54,902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,962.40 : 121,414.80 = 36,610.40 : x
  2. Step 2: Convert to fraction form
    80,962.40/121,414.80 = 36,610.40/x
  3. Step 3: Cross multiply
    80,962.40x = 121,414.80 × 36,610.40
  4. Step 4: Simplify right side
    80,962.40x = 4,445,044,393.92
  5. Step 5: Solve for x
    x = 4,445,044,393.92/80,962.40
  6. Step 6: Final answer
    x = 54,902.58

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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.