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Finding the Fourth Proportional to 69,251.78, 103,877.67 and 16,661.27

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Solution

The fourth proportional to 69,251.78, 103,877.67 and 16,661.27 is: 24,991.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,251.78 : 103,877.67 = 16,661.27 : x
  2. Step 2: Convert to fraction form
    69,251.78/103,877.67 = 16,661.27/x
  3. Step 3: Cross multiply
    69,251.78x = 103,877.67 × 16,661.27
  4. Step 4: Simplify right side
    69,251.78x = 1,730,733,408.28
  5. Step 5: Solve for x
    x = 1,730,733,408.28/69,251.78
  6. Step 6: Final answer
    x = 24,991.90

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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.