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Finding the Third Proportional to 28,220.25 and 43,719.75

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Solution

The third proportional to 28,220.25 and 43,719.75 is: 67,732.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.25 : 43,719.75 = 43,719.75 : x
  2. Step 2: Convert to fraction form
    28,220.25/43,719.75 = 43,719.75/x
  3. Step 3: Cross multiply
    28,220.25x = 43,719.75 × 43,719.75
  4. Step 4: Simplify right side
    28,220.25x = 1,911,416,540.06
  5. Step 5: Solve for x
    x = 1,911,416,540.06/28,220.25
  6. Step 6: Final answer
    x = 67,732.09

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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.