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Finding the Third Proportional to 66,894 and 91,710

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Solution

The third proportional to 66,894 and 91,710 is: 125,732.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,894 : 91,710 = 91,710 : x
  2. Step 2: Convert to fraction form
    66,894/91,710 = 91,710/x
  3. Step 3: Cross multiply
    66,894x = 91,710 × 91,710
  4. Step 4: Simplify right side
    66,894x = 8,410,724,100
  5. Step 5: Solve for x
    x = 8,410,724,100/66,894
  6. Step 6: Final answer
    x = 125,732.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.