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Finding the Third Proportional to 67,389.75 and 99,771

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Solution

The third proportional to 67,389.75 and 99,771 is: 147,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,389.75 : 99,771 = 99,771 : x
  2. Step 2: Convert to fraction form
    67,389.75/99,771 = 99,771/x
  3. Step 3: Cross multiply
    67,389.75x = 99,771 × 99,771
  4. Step 4: Simplify right side
    67,389.75x = 9,954,252,441
  5. Step 5: Solve for x
    x = 9,954,252,441/67,389.75
  6. Step 6: Final answer
    x = 147,711.67

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.