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Finding the Third Proportional to 45,270 and 69,972.75

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Solution

The third proportional to 45,270 and 69,972.75 is: 108,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,270 : 69,972.75 = 69,972.75 : x
  2. Step 2: Convert to fraction form
    45,270/69,972.75 = 69,972.75/x
  3. Step 3: Cross multiply
    45,270x = 69,972.75 × 69,972.75
  4. Step 4: Simplify right side
    45,270x = 4,896,185,742.56
  5. Step 5: Solve for x
    x = 4,896,185,742.56/45,270
  6. Step 6: Final answer
    x = 108,155.20

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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.