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Finding the Third Proportional to 30,468 and 66,876

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Solution

The third proportional to 30,468 and 66,876 is: 146,790.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,468 : 66,876 = 66,876 : x
  2. Step 2: Convert to fraction form
    30,468/66,876 = 66,876/x
  3. Step 3: Cross multiply
    30,468x = 66,876 × 66,876
  4. Step 4: Simplify right side
    30,468x = 4,472,399,376
  5. Step 5: Solve for x
    x = 4,472,399,376/30,468
  6. Step 6: Final answer
    x = 146,790.05

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.