Home / 81,067.80-121,456.13-49,461.55

Finding the Fourth Proportional to 81,067.80, 121,456.13 and 49,461.55

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Solution

The fourth proportional to 81,067.80, 121,456.13 and 49,461.55 is: 74,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,067.80 : 121,456.13 = 49,461.55 : x
  2. Step 2: Convert to fraction form
    81,067.80/121,456.13 = 49,461.55/x
  3. Step 3: Cross multiply
    81,067.80x = 121,456.13 × 49,461.55
  4. Step 4: Simplify right side
    81,067.80x = 6,007,408,996.38
  5. Step 5: Solve for x
    x = 6,007,408,996.38/81,067.80
  6. Step 6: Final answer
    x = 74,103.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.