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Finding the Third Proportional to 66,426.75 and 71,894.25

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Solution

The third proportional to 66,426.75 and 71,894.25 is: 77,811.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,426.75 : 71,894.25 = 71,894.25 : x
  2. Step 2: Convert to fraction form
    66,426.75/71,894.25 = 71,894.25/x
  3. Step 3: Cross multiply
    66,426.75x = 71,894.25 × 71,894.25
  4. Step 4: Simplify right side
    66,426.75x = 5,168,783,183.06
  5. Step 5: Solve for x
    x = 5,168,783,183.06/66,426.75
  6. Step 6: Final answer
    x = 77,811.77

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.