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Finding the Third Proportional to 30,357 and 66,257

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Solution

The third proportional to 30,357 and 66,257 is: 144,612.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,357 : 66,257 = 66,257 : x
  2. Step 2: Convert to fraction form
    30,357/66,257 = 66,257/x
  3. Step 3: Cross multiply
    30,357x = 66,257 × 66,257
  4. Step 4: Simplify right side
    30,357x = 4,389,990,049
  5. Step 5: Solve for x
    x = 4,389,990,049/30,357
  6. Step 6: Final answer
    x = 144,612.12

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.