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Finding the Third Proportional to 61,128 and 82,476

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Solution

The third proportional to 61,128 and 82,476 is: 111,279.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,128 : 82,476 = 82,476 : x
  2. Step 2: Convert to fraction form
    61,128/82,476 = 82,476/x
  3. Step 3: Cross multiply
    61,128x = 82,476 × 82,476
  4. Step 4: Simplify right side
    61,128x = 6,802,290,576
  5. Step 5: Solve for x
    x = 6,802,290,576/61,128
  6. Step 6: Final answer
    x = 111,279.46

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.