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Finding the Third Proportional to 30,680 and 66,483

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Solution

The third proportional to 30,680 and 66,483 is: 144,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,680 : 66,483 = 66,483 : x
  2. Step 2: Convert to fraction form
    30,680/66,483 = 66,483/x
  3. Step 3: Cross multiply
    30,680x = 66,483 × 66,483
  4. Step 4: Simplify right side
    30,680x = 4,419,989,289
  5. Step 5: Solve for x
    x = 4,419,989,289/30,680
  6. Step 6: Final answer
    x = 144,067.45

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.