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Finding the Fourth Proportional to 90,424.54, 124,811.85 and 54,608.50

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Solution

The fourth proportional to 90,424.54, 124,811.85 and 54,608.50 is: 75,375.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,424.54 : 124,811.85 = 54,608.50 : x
  2. Step 2: Convert to fraction form
    90,424.54/124,811.85 = 54,608.50/x
  3. Step 3: Cross multiply
    90,424.54x = 124,811.85 × 54,608.50
  4. Step 4: Simplify right side
    90,424.54x = 6,815,787,910.73
  5. Step 5: Solve for x
    x = 6,815,787,910.73/90,424.54
  6. Step 6: Final answer
    x = 75,375.42

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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.