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Finding the Fourth Proportional to 68,873.69, 103,212.11 and 39,230.33

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Solution

The fourth proportional to 68,873.69, 103,212.11 and 39,230.33 is: 58,789.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,873.69 : 103,212.11 = 39,230.33 : x
  2. Step 2: Convert to fraction form
    68,873.69/103,212.11 = 39,230.33/x
  3. Step 3: Cross multiply
    68,873.69x = 103,212.11 × 39,230.33
  4. Step 4: Simplify right side
    68,873.69x = 4,049,044,423.08
  5. Step 5: Solve for x
    x = 4,049,044,423.08/68,873.69
  6. Step 6: Final answer
    x = 58,789.43

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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.