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Finding the Third Proportional to 53,947.75 and 81,671.25

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Solution

The third proportional to 53,947.75 and 81,671.25 is: 123,641.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,947.75 : 81,671.25 = 81,671.25 : x
  2. Step 2: Convert to fraction form
    53,947.75/81,671.25 = 81,671.25/x
  3. Step 3: Cross multiply
    53,947.75x = 81,671.25 × 81,671.25
  4. Step 4: Simplify right side
    53,947.75x = 6,670,193,076.56
  5. Step 5: Solve for x
    x = 6,670,193,076.56/53,947.75
  6. Step 6: Final answer
    x = 123,641.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.