Home / 78,380.30-108,177.04-44,390.54

Finding the Fourth Proportional to 78,380.30, 108,177.04 and 44,390.54

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Solution

The fourth proportional to 78,380.30, 108,177.04 and 44,390.54 is: 61,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,380.30 : 108,177.04 = 44,390.54 : x
  2. Step 2: Convert to fraction form
    78,380.30/108,177.04 = 44,390.54/x
  3. Step 3: Cross multiply
    78,380.30x = 108,177.04 × 44,390.54
  4. Step 4: Simplify right side
    78,380.30x = 4,802,037,221.20
  5. Step 5: Solve for x
    x = 4,802,037,221.20/78,380.30
  6. Step 6: Final answer
    x = 61,265.87

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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.