Home / 78,933.14-108,909.32-48,719.73

Finding the Fourth Proportional to 78,933.14, 108,909.32 and 48,719.73

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Solution

The fourth proportional to 78,933.14, 108,909.32 and 48,719.73 is: 67,221.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,933.14 : 108,909.32 = 48,719.73 : x
  2. Step 2: Convert to fraction form
    78,933.14/108,909.32 = 48,719.73/x
  3. Step 3: Cross multiply
    78,933.14x = 108,909.32 × 48,719.73
  4. Step 4: Simplify right side
    78,933.14x = 5,306,032,664.88
  5. Step 5: Solve for x
    x = 5,306,032,664.88/78,933.14
  6. Step 6: Final answer
    x = 67,221.86

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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.