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Finding the Third Proportional to 20,836 and 43,580

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Solution

The third proportional to 20,836 and 43,580 is: 91,150.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836 : 43,580 = 43,580 : x
  2. Step 2: Convert to fraction form
    20,836/43,580 = 43,580/x
  3. Step 3: Cross multiply
    20,836x = 43,580 × 43,580
  4. Step 4: Simplify right side
    20,836x = 1,899,216,400
  5. Step 5: Solve for x
    x = 1,899,216,400/20,836
  6. Step 6: Final answer
    x = 91,150.72

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.