Home / 78,789.80-108,738.99-43,867.97

Finding the Fourth Proportional to 78,789.80, 108,738.99 and 43,867.97

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Solution

The fourth proportional to 78,789.80, 108,738.99 and 43,867.97 is: 60,542.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,789.80 : 108,738.99 = 43,867.97 : x
  2. Step 2: Convert to fraction form
    78,789.80/108,738.99 = 43,867.97/x
  3. Step 3: Cross multiply
    78,789.80x = 108,738.99 × 43,867.97
  4. Step 4: Simplify right side
    78,789.80x = 4,770,158,207.46
  5. Step 5: Solve for x
    x = 4,770,158,207.46/78,789.80
  6. Step 6: Final answer
    x = 60,542.84

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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.