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Finding the Third Proportional to 55,530 and 79,141

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Solution

The third proportional to 55,530 and 79,141 is: 112,791.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,530 : 79,141 = 79,141 : x
  2. Step 2: Convert to fraction form
    55,530/79,141 = 79,141/x
  3. Step 3: Cross multiply
    55,530x = 79,141 × 79,141
  4. Step 4: Simplify right side
    55,530x = 6,263,297,881
  5. Step 5: Solve for x
    x = 6,263,297,881/55,530
  6. Step 6: Final answer
    x = 112,791.25

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.