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Finding the Third Proportional to 27,000 and 42,270

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Solution

The third proportional to 27,000 and 42,270 is: 66,176.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,000 : 42,270 = 42,270 : x
  2. Step 2: Convert to fraction form
    27,000/42,270 = 42,270/x
  3. Step 3: Cross multiply
    27,000x = 42,270 × 42,270
  4. Step 4: Simplify right side
    27,000x = 1,786,752,900
  5. Step 5: Solve for x
    x = 1,786,752,900/27,000
  6. Step 6: Final answer
    x = 66,176.03

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.