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Finding the Fourth Proportional to 79,067.31, 109,100.97 and 45,078.75

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Solution

The fourth proportional to 79,067.31, 109,100.97 and 45,078.75 is: 62,201.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,067.31 : 109,100.97 = 45,078.75 : x
  2. Step 2: Convert to fraction form
    79,067.31/109,100.97 = 45,078.75/x
  3. Step 3: Cross multiply
    79,067.31x = 109,100.97 × 45,078.75
  4. Step 4: Simplify right side
    79,067.31x = 4,918,135,351.39
  5. Step 5: Solve for x
    x = 4,918,135,351.39/79,067.31
  6. Step 6: Final answer
    x = 62,201.88

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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.