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Finding the Fourth Proportional to 90,205.68, 124,481.97 and 49,917.03

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Solution

The fourth proportional to 90,205.68, 124,481.97 and 49,917.03 is: 68,884.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,205.68 : 124,481.97 = 49,917.03 : x
  2. Step 2: Convert to fraction form
    90,205.68/124,481.97 = 49,917.03/x
  3. Step 3: Cross multiply
    90,205.68x = 124,481.97 × 49,917.03
  4. Step 4: Simplify right side
    90,205.68x = 6,213,770,230.95
  5. Step 5: Solve for x
    x = 6,213,770,230.95/90,205.68
  6. Step 6: Final answer
    x = 68,884.47

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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.