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Finding the Third Proportional to 53,974 and 81,715

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Solution

The third proportional to 53,974 and 81,715 is: 123,714.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,974 : 81,715 = 81,715 : x
  2. Step 2: Convert to fraction form
    53,974/81,715 = 81,715/x
  3. Step 3: Cross multiply
    53,974x = 81,715 × 81,715
  4. Step 4: Simplify right side
    53,974x = 6,677,341,225
  5. Step 5: Solve for x
    x = 6,677,341,225/53,974
  6. Step 6: Final answer
    x = 123,714.03

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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.