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Finding the Third Proportional to 30,876 and 66,648

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Solution

The third proportional to 30,876 and 66,648 is: 143,864.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876 : 66,648 = 66,648 : x
  2. Step 2: Convert to fraction form
    30,876/66,648 = 66,648/x
  3. Step 3: Cross multiply
    30,876x = 66,648 × 66,648
  4. Step 4: Simplify right side
    30,876x = 4,441,955,904
  5. Step 5: Solve for x
    x = 4,441,955,904/30,876
  6. Step 6: Final answer
    x = 143,864.36

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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.