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Finding the Third Proportional to 27,090 and 40,919

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Solution

The third proportional to 27,090 and 40,919 is: 61,807.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,090 : 40,919 = 40,919 : x
  2. Step 2: Convert to fraction form
    27,090/40,919 = 40,919/x
  3. Step 3: Cross multiply
    27,090x = 40,919 × 40,919
  4. Step 4: Simplify right side
    27,090x = 1,674,364,561
  5. Step 5: Solve for x
    x = 1,674,364,561/27,090
  6. Step 6: Final answer
    x = 61,807.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.