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Finding the Third Proportional to 57,770 and 77,966

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Solution

The third proportional to 57,770 and 77,966 is: 105,222.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,770 : 77,966 = 77,966 : x
  2. Step 2: Convert to fraction form
    57,770/77,966 = 77,966/x
  3. Step 3: Cross multiply
    57,770x = 77,966 × 77,966
  4. Step 4: Simplify right side
    57,770x = 6,078,697,156
  5. Step 5: Solve for x
    x = 6,078,697,156/57,770
  6. Step 6: Final answer
    x = 105,222.38

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.