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Finding the Fourth Proportional to 68,869.38, 103,300.43 and 22,118.61

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Solution

The fourth proportional to 68,869.38, 103,300.43 and 22,118.61 is: 33,176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,869.38 : 103,300.43 = 22,118.61 : x
  2. Step 2: Convert to fraction form
    68,869.38/103,300.43 = 22,118.61/x
  3. Step 3: Cross multiply
    68,869.38x = 103,300.43 × 22,118.61
  4. Step 4: Simplify right side
    68,869.38x = 2,284,861,813.41
  5. Step 5: Solve for x
    x = 2,284,861,813.41/68,869.38
  6. Step 6: Final answer
    x = 33,176.74

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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.