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Finding the Third Proportional to 62,480 and 91,128

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Solution

The third proportional to 62,480 and 91,128 is: 132,911.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,480 : 91,128 = 91,128 : x
  2. Step 2: Convert to fraction form
    62,480/91,128 = 91,128/x
  3. Step 3: Cross multiply
    62,480x = 91,128 × 91,128
  4. Step 4: Simplify right side
    62,480x = 8,304,312,384
  5. Step 5: Solve for x
    x = 8,304,312,384/62,480
  6. Step 6: Final answer
    x = 132,911.53

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.