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Finding the Third Proportional to 30,464 and 66,868

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Solution

The third proportional to 30,464 and 66,868 is: 146,774.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,464 : 66,868 = 66,868 : x
  2. Step 2: Convert to fraction form
    30,464/66,868 = 66,868/x
  3. Step 3: Cross multiply
    30,464x = 66,868 × 66,868
  4. Step 4: Simplify right side
    30,464x = 4,471,329,424
  5. Step 5: Solve for x
    x = 4,471,329,424/30,464
  6. Step 6: Final answer
    x = 146,774.21

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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.