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Finding the Fourth Proportional to 84,040.85, 115,974.82 and 45,800.71

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Solution

The fourth proportional to 84,040.85, 115,974.82 and 45,800.71 is: 63,204.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,040.85 : 115,974.82 = 45,800.71 : x
  2. Step 2: Convert to fraction form
    84,040.85/115,974.82 = 45,800.71/x
  3. Step 3: Cross multiply
    84,040.85x = 115,974.82 × 45,800.71
  4. Step 4: Simplify right side
    84,040.85x = 5,311,729,098.12
  5. Step 5: Solve for x
    x = 5,311,729,098.12/84,040.85
  6. Step 6: Final answer
    x = 63,204.13

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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.