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Finding the Third Proportional to 45,387 and 69,993.75

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Solution

The third proportional to 45,387 and 69,993.75 is: 107,941.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,387 : 69,993.75 = 69,993.75 : x
  2. Step 2: Convert to fraction form
    45,387/69,993.75 = 69,993.75/x
  3. Step 3: Cross multiply
    45,387x = 69,993.75 × 69,993.75
  4. Step 4: Simplify right side
    45,387x = 4,899,125,039.06
  5. Step 5: Solve for x
    x = 4,899,125,039.06/45,387
  6. Step 6: Final answer
    x = 107,941.15

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.