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Finding the Third Proportional to 27,757 and 42,330

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Solution

The third proportional to 27,757 and 42,330 is: 64,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,757 : 42,330 = 42,330 : x
  2. Step 2: Convert to fraction form
    27,757/42,330 = 42,330/x
  3. Step 3: Cross multiply
    27,757x = 42,330 × 42,330
  4. Step 4: Simplify right side
    27,757x = 1,791,828,900
  5. Step 5: Solve for x
    x = 1,791,828,900/27,757
  6. Step 6: Final answer
    x = 64,554.13

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.