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Finding the Third Proportional to 36,138 and 55,615

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Solution

The third proportional to 36,138 and 55,615 is: 85,589.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138 : 55,615 = 55,615 : x
  2. Step 2: Convert to fraction form
    36,138/55,615 = 55,615/x
  3. Step 3: Cross multiply
    36,138x = 55,615 × 55,615
  4. Step 4: Simplify right side
    36,138x = 3,093,028,225
  5. Step 5: Solve for x
    x = 3,093,028,225/36,138
  6. Step 6: Final answer
    x = 85,589.36

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.