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Finding the Third Proportional to 66,921.50 and 97,868

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Solution

The third proportional to 66,921.50 and 97,868 is: 143,125.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,921.50 : 97,868 = 97,868 : x
  2. Step 2: Convert to fraction form
    66,921.50/97,868 = 97,868/x
  3. Step 3: Cross multiply
    66,921.50x = 97,868 × 97,868
  4. Step 4: Simplify right side
    66,921.50x = 9,578,145,424
  5. Step 5: Solve for x
    x = 9,578,145,424/66,921.50
  6. Step 6: Final answer
    x = 143,125.09

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.