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Finding the Fourth Proportional to 79,211.93, 119,067.02 and 68,811.47

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Solution

The fourth proportional to 79,211.93, 119,067.02 and 68,811.47 is: 103,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,211.93 : 119,067.02 = 68,811.47 : x
  2. Step 2: Convert to fraction form
    79,211.93/119,067.02 = 68,811.47/x
  3. Step 3: Cross multiply
    79,211.93x = 119,067.02 × 68,811.47
  4. Step 4: Simplify right side
    79,211.93x = 8,193,175,735.33
  5. Step 5: Solve for x
    x = 8,193,175,735.33/79,211.93
  6. Step 6: Final answer
    x = 103,433.60

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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.