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Finding the Third Proportional to 56,790 and 85,977

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Solution

The third proportional to 56,790 and 85,977 is: 130,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,790 : 85,977 = 85,977 : x
  2. Step 2: Convert to fraction form
    56,790/85,977 = 85,977/x
  3. Step 3: Cross multiply
    56,790x = 85,977 × 85,977
  4. Step 4: Simplify right side
    56,790x = 7,392,044,529
  5. Step 5: Solve for x
    x = 7,392,044,529/56,790
  6. Step 6: Final answer
    x = 130,164.55

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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.