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Finding the Fourth Proportional to 61,305.92, 91,951.96 and 16,939

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Solution

The fourth proportional to 61,305.92, 91,951.96 and 16,939 is: 25,406.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,305.92 : 91,951.96 = 16,939 : x
  2. Step 2: Convert to fraction form
    61,305.92/91,951.96 = 16,939/x
  3. Step 3: Cross multiply
    61,305.92x = 91,951.96 × 16,939
  4. Step 4: Simplify right side
    61,305.92x = 1,557,574,250.44
  5. Step 5: Solve for x
    x = 1,557,574,250.44/61,305.92
  6. Step 6: Final answer
    x = 25,406.59

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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.