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Finding the Third Proportional to 55,782 and 85,455

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Solution

The third proportional to 55,782 and 85,455 is: 130,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,782 : 85,455 = 85,455 : x
  2. Step 2: Convert to fraction form
    55,782/85,455 = 85,455/x
  3. Step 3: Cross multiply
    55,782x = 85,455 × 85,455
  4. Step 4: Simplify right side
    55,782x = 7,302,557,025
  5. Step 5: Solve for x
    x = 7,302,557,025/55,782
  6. Step 6: Final answer
    x = 130,912.43

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.