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Finding the Third Proportional to 66,420 and 98,682

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Solution

The third proportional to 66,420 and 98,682 is: 146,614.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,420 : 98,682 = 98,682 : x
  2. Step 2: Convert to fraction form
    66,420/98,682 = 98,682/x
  3. Step 3: Cross multiply
    66,420x = 98,682 × 98,682
  4. Step 4: Simplify right side
    66,420x = 9,738,137,124
  5. Step 5: Solve for x
    x = 9,738,137,124/66,420
  6. Step 6: Final answer
    x = 146,614.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.