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Finding the Third Proportional to 30,398 and 66,933

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Solution

The third proportional to 30,398 and 66,933 is: 147,378.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,398 : 66,933 = 66,933 : x
  2. Step 2: Convert to fraction form
    30,398/66,933 = 66,933/x
  3. Step 3: Cross multiply
    30,398x = 66,933 × 66,933
  4. Step 4: Simplify right side
    30,398x = 4,480,026,489
  5. Step 5: Solve for x
    x = 4,480,026,489/30,398
  6. Step 6: Final answer
    x = 147,378.99

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.