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Finding the Fourth Proportional to 81,732, 122,598 and 26,328

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Solution

The fourth proportional to 81,732, 122,598 and 26,328 is: 39,492

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,732 : 122,598 = 26,328 : x
  2. Step 2: Convert to fraction form
    81,732/122,598 = 26,328/x
  3. Step 3: Cross multiply
    81,732x = 122,598 × 26,328
  4. Step 4: Simplify right side
    81,732x = 3,227,760,144
  5. Step 5: Solve for x
    x = 3,227,760,144/81,732
  6. Step 6: Final answer
    x = 39,492

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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.