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Finding the Third Proportional to 21,836 and 51,328

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Solution

The third proportional to 21,836 and 51,328 is: 120,652.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836 : 51,328 = 51,328 : x
  2. Step 2: Convert to fraction form
    21,836/51,328 = 51,328/x
  3. Step 3: Cross multiply
    21,836x = 51,328 × 51,328
  4. Step 4: Simplify right side
    21,836x = 2,634,563,584
  5. Step 5: Solve for x
    x = 2,634,563,584/21,836
  6. Step 6: Final answer
    x = 120,652.30

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.