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Finding the Fourth Proportional to 32,785, 49,177.68 and 8,161

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Solution

The fourth proportional to 32,785, 49,177.68 and 8,161 is: 12,241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,785 : 49,177.68 = 8,161 : x
  2. Step 2: Convert to fraction form
    32,785/49,177.68 = 8,161/x
  3. Step 3: Cross multiply
    32,785x = 49,177.68 × 8,161
  4. Step 4: Simplify right side
    32,785x = 401,339,046.48
  5. Step 5: Solve for x
    x = 401,339,046.48/32,785
  6. Step 6: Final answer
    x = 12,241.54

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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.