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Finding the Fourth Proportional to 68,615.26, 102,789.70 and 50,570.69

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Solution

The fourth proportional to 68,615.26, 102,789.70 and 50,570.69 is: 75,757.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,615.26 : 102,789.70 = 50,570.69 : x
  2. Step 2: Convert to fraction form
    68,615.26/102,789.70 = 50,570.69/x
  3. Step 3: Cross multiply
    68,615.26x = 102,789.70 × 50,570.69
  4. Step 4: Simplify right side
    68,615.26x = 5,198,145,413.52
  5. Step 5: Solve for x
    x = 5,198,145,413.52/68,615.26
  6. Step 6: Final answer
    x = 75,757.86

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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.