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Finding the Third Proportional to 15,128 and 33,165

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Solution

The third proportional to 15,128 and 33,165 is: 72,707.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128 : 33,165 = 33,165 : x
  2. Step 2: Convert to fraction form
    15,128/33,165 = 33,165/x
  3. Step 3: Cross multiply
    15,128x = 33,165 × 33,165
  4. Step 4: Simplify right side
    15,128x = 1,099,917,225
  5. Step 5: Solve for x
    x = 1,099,917,225/15,128
  6. Step 6: Final answer
    x = 72,707.38

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.