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Finding the Third Proportional to 28,231 and 43,738

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Solution

The third proportional to 28,231 and 43,738 is: 67,762.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,231 : 43,738 = 43,738 : x
  2. Step 2: Convert to fraction form
    28,231/43,738 = 43,738/x
  3. Step 3: Cross multiply
    28,231x = 43,738 × 43,738
  4. Step 4: Simplify right side
    28,231x = 1,913,012,644
  5. Step 5: Solve for x
    x = 1,913,012,644/28,231
  6. Step 6: Final answer
    x = 67,762.84

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.