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Finding the Third Proportional to 28,828 and 62,121

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Solution

The third proportional to 28,828 and 62,121 is: 133,863.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828 : 62,121 = 62,121 : x
  2. Step 2: Convert to fraction form
    28,828/62,121 = 62,121/x
  3. Step 3: Cross multiply
    28,828x = 62,121 × 62,121
  4. Step 4: Simplify right side
    28,828x = 3,859,018,641
  5. Step 5: Solve for x
    x = 3,859,018,641/28,828
  6. Step 6: Final answer
    x = 133,863.56

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.