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Finding the Third Proportional to 55,427 and 121,925

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Solution

The third proportional to 55,427 and 121,925 is: 268,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,427 : 121,925 = 121,925 : x
  2. Step 2: Convert to fraction form
    55,427/121,925 = 121,925/x
  3. Step 3: Cross multiply
    55,427x = 121,925 × 121,925
  4. Step 4: Simplify right side
    55,427x = 14,865,705,625
  5. Step 5: Solve for x
    x = 14,865,705,625/55,427
  6. Step 6: Final answer
    x = 268,203.32

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.