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Finding the Third Proportional to 70,872.75 and 109,739.25

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Solution

The third proportional to 70,872.75 and 109,739.25 is: 169,920.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,872.75 : 109,739.25 = 109,739.25 : x
  2. Step 2: Convert to fraction form
    70,872.75/109,739.25 = 109,739.25/x
  3. Step 3: Cross multiply
    70,872.75x = 109,739.25 × 109,739.25
  4. Step 4: Simplify right side
    70,872.75x = 12,042,702,990.56
  5. Step 5: Solve for x
    x = 12,042,702,990.56/70,872.75
  6. Step 6: Final answer
    x = 169,920.07

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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.