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Finding the Fourth Proportional to 84,610.95, 126,791.82 and 47,119.51

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Solution

The fourth proportional to 84,610.95, 126,791.82 and 47,119.51 is: 70,609.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,610.95 : 126,791.82 = 47,119.51 : x
  2. Step 2: Convert to fraction form
    84,610.95/126,791.82 = 47,119.51/x
  3. Step 3: Cross multiply
    84,610.95x = 126,791.82 × 47,119.51
  4. Step 4: Simplify right side
    84,610.95x = 5,974,367,936.73
  5. Step 5: Solve for x
    x = 5,974,367,936.73/84,610.95
  6. Step 6: Final answer
    x = 70,609.86

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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.