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Finding the Third Proportional to 56,979 and 88,455

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Solution

The third proportional to 56,979 and 88,455 is: 137,318.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,979 : 88,455 = 88,455 : x
  2. Step 2: Convert to fraction form
    56,979/88,455 = 88,455/x
  3. Step 3: Cross multiply
    56,979x = 88,455 × 88,455
  4. Step 4: Simplify right side
    56,979x = 7,824,287,025
  5. Step 5: Solve for x
    x = 7,824,287,025/56,979
  6. Step 6: Final answer
    x = 137,318.78

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.