Home / 78,819.39-108,739.49-48,552.21

Finding the Fourth Proportional to 78,819.39, 108,739.49 and 48,552.21

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Solution

The fourth proportional to 78,819.39, 108,739.49 and 48,552.21 is: 66,982.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,819.39 : 108,739.49 = 48,552.21 : x
  2. Step 2: Convert to fraction form
    78,819.39/108,739.49 = 48,552.21/x
  3. Step 3: Cross multiply
    78,819.39x = 108,739.49 × 48,552.21
  4. Step 4: Simplify right side
    78,819.39x = 5,279,542,311.01
  5. Step 5: Solve for x
    x = 5,279,542,311.01/78,819.39
  6. Step 6: Final answer
    x = 66,982.79

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1.5x scale

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.