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Finding the Third Proportional to 66,974 and 103,785

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Solution

The third proportional to 66,974 and 103,785 is: 160,828.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,974 : 103,785 = 103,785 : x
  2. Step 2: Convert to fraction form
    66,974/103,785 = 103,785/x
  3. Step 3: Cross multiply
    66,974x = 103,785 × 103,785
  4. Step 4: Simplify right side
    66,974x = 10,771,326,225
  5. Step 5: Solve for x
    x = 10,771,326,225/66,974
  6. Step 6: Final answer
    x = 160,828.47

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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.