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Finding the Fourth Proportional to 77,836.97, 107,375.78 and 45,550.37

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Solution

The fourth proportional to 77,836.97, 107,375.78 and 45,550.37 is: 62,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,836.97 : 107,375.78 = 45,550.37 : x
  2. Step 2: Convert to fraction form
    77,836.97/107,375.78 = 45,550.37/x
  3. Step 3: Cross multiply
    77,836.97x = 107,375.78 × 45,550.37
  4. Step 4: Simplify right side
    77,836.97x = 4,891,006,890.35
  5. Step 5: Solve for x
    x = 4,891,006,890.35/77,836.97
  6. Step 6: Final answer
    x = 62,836.55

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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.