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Finding the Third Proportional to 56,744 and 121,912

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Solution

The third proportional to 56,744 and 121,912 is: 261,922.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,744 : 121,912 = 121,912 : x
  2. Step 2: Convert to fraction form
    56,744/121,912 = 121,912/x
  3. Step 3: Cross multiply
    56,744x = 121,912 × 121,912
  4. Step 4: Simplify right side
    56,744x = 14,862,535,744
  5. Step 5: Solve for x
    x = 14,862,535,744/56,744
  6. Step 6: Final answer
    x = 261,922.60

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.