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Finding the Fourth Proportional to 81,668, 122,502 and 26,264

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Solution

The fourth proportional to 81,668, 122,502 and 26,264 is: 39,396

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,668 : 122,502 = 26,264 : x
  2. Step 2: Convert to fraction form
    81,668/122,502 = 26,264/x
  3. Step 3: Cross multiply
    81,668x = 122,502 × 26,264
  4. Step 4: Simplify right side
    81,668x = 3,217,392,528
  5. Step 5: Solve for x
    x = 3,217,392,528/81,668
  6. Step 6: Final answer
    x = 39,396

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.