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Finding the Third Proportional to 38,590 and 51,456

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Solution

The third proportional to 38,590 and 51,456 is: 68,611.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,590 : 51,456 = 51,456 : x
  2. Step 2: Convert to fraction form
    38,590/51,456 = 51,456/x
  3. Step 3: Cross multiply
    38,590x = 51,456 × 51,456
  4. Step 4: Simplify right side
    38,590x = 2,647,719,936
  5. Step 5: Solve for x
    x = 2,647,719,936/38,590
  6. Step 6: Final answer
    x = 68,611.56

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.