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Finding the Fourth Proportional to 79,789.65, 110,078.82 and 45,785.85

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Solution

The fourth proportional to 79,789.65, 110,078.82 and 45,785.85 is: 63,166.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,789.65 : 110,078.82 = 45,785.85 : x
  2. Step 2: Convert to fraction form
    79,789.65/110,078.82 = 45,785.85/x
  3. Step 3: Cross multiply
    79,789.65x = 110,078.82 × 45,785.85
  4. Step 4: Simplify right side
    79,789.65x = 5,040,052,340.70
  5. Step 5: Solve for x
    x = 5,040,052,340.70/79,789.65
  6. Step 6: Final answer
    x = 63,166.74

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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.