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Finding the Third Proportional to 60,459 and 90,921

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Solution

The third proportional to 60,459 and 90,921 is: 136,731.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,459 : 90,921 = 90,921 : x
  2. Step 2: Convert to fraction form
    60,459/90,921 = 90,921/x
  3. Step 3: Cross multiply
    60,459x = 90,921 × 90,921
  4. Step 4: Simplify right side
    60,459x = 8,266,628,241
  5. Step 5: Solve for x
    x = 8,266,628,241/60,459
  6. Step 6: Final answer
    x = 136,731.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.