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Finding the Third Proportional to 28,908 and 62,128

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Solution

The third proportional to 28,908 and 62,128 is: 133,523.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,908 : 62,128 = 62,128 : x
  2. Step 2: Convert to fraction form
    28,908/62,128 = 62,128/x
  3. Step 3: Cross multiply
    28,908x = 62,128 × 62,128
  4. Step 4: Simplify right side
    28,908x = 3,859,888,384
  5. Step 5: Solve for x
    x = 3,859,888,384/28,908
  6. Step 6: Final answer
    x = 133,523.19

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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.