Home / 74,691.20-111,938.40-54,876.80

Finding the Fourth Proportional to 74,691.20, 111,938.40 and 54,876.80

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Solution

The fourth proportional to 74,691.20, 111,938.40 and 54,876.80 is: 82,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,691.20 : 111,938.40 = 54,876.80 : x
  2. Step 2: Convert to fraction form
    74,691.20/111,938.40 = 54,876.80/x
  3. Step 3: Cross multiply
    74,691.20x = 111,938.40 × 54,876.80
  4. Step 4: Simplify right side
    74,691.20x = 6,142,821,189.12
  5. Step 5: Solve for x
    x = 6,142,821,189.12/74,691.20
  6. Step 6: Final answer
    x = 82,242.90

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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.