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Finding the Third Proportional to 30,756 and 66,444

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Solution

The third proportional to 30,756 and 66,444 is: 143,542.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,756 : 66,444 = 66,444 : x
  2. Step 2: Convert to fraction form
    30,756/66,444 = 66,444/x
  3. Step 3: Cross multiply
    30,756x = 66,444 × 66,444
  4. Step 4: Simplify right side
    30,756x = 4,414,805,136
  5. Step 5: Solve for x
    x = 4,414,805,136/30,756
  6. Step 6: Final answer
    x = 143,542.89

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.