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Finding the Fourth Proportional to 68,873.27, 103,211.34 and 39,229.91

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Solution

The fourth proportional to 68,873.27, 103,211.34 and 39,229.91 is: 58,788.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,873.27 : 103,211.34 = 39,229.91 : x
  2. Step 2: Convert to fraction form
    68,873.27/103,211.34 = 39,229.91/x
  3. Step 3: Cross multiply
    68,873.27x = 103,211.34 × 39,229.91
  4. Step 4: Simplify right side
    68,873.27x = 4,048,971,063.12
  5. Step 5: Solve for x
    x = 4,048,971,063.12/68,873.27
  6. Step 6: Final answer
    x = 58,788.72

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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.