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Finding the Fourth Proportional to 79,879.62, 110,185.05 and 51,189.66

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Solution

The fourth proportional to 79,879.62, 110,185.05 and 51,189.66 is: 70,610.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,879.62 : 110,185.05 = 51,189.66 : x
  2. Step 2: Convert to fraction form
    79,879.62/110,185.05 = 51,189.66/x
  3. Step 3: Cross multiply
    79,879.62x = 110,185.05 × 51,189.66
  4. Step 4: Simplify right side
    79,879.62x = 5,640,335,246.58
  5. Step 5: Solve for x
    x = 5,640,335,246.58/79,879.62
  6. Step 6: Final answer
    x = 70,610.44

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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.