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Finding the Third Proportional to 38,708 and 57,911

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Solution

The third proportional to 38,708 and 57,911 is: 86,640.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,708 : 57,911 = 57,911 : x
  2. Step 2: Convert to fraction form
    38,708/57,911 = 57,911/x
  3. Step 3: Cross multiply
    38,708x = 57,911 × 57,911
  4. Step 4: Simplify right side
    38,708x = 3,353,683,921
  5. Step 5: Solve for x
    x = 3,353,683,921/38,708
  6. Step 6: Final answer
    x = 86,640.59

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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.