Home / 78,504.96-108,311.04-48,691.20

Finding the Fourth Proportional to 78,504.96, 108,311.04 and 48,691.20

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Solution

The fourth proportional to 78,504.96, 108,311.04 and 48,691.20 is: 67,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,504.96 : 108,311.04 = 48,691.20 : x
  2. Step 2: Convert to fraction form
    78,504.96/108,311.04 = 48,691.20/x
  3. Step 3: Cross multiply
    78,504.96x = 108,311.04 × 48,691.20
  4. Step 4: Simplify right side
    78,504.96x = 5,273,794,510.85
  5. Step 5: Solve for x
    x = 5,273,794,510.85/78,504.96
  6. Step 6: Final answer
    x = 67,177.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.