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Finding the Third Proportional to 66,910.50 and 145,485

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Solution

The third proportional to 66,910.50 and 145,485 is: 316,331.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,910.50 : 145,485 = 145,485 : x
  2. Step 2: Convert to fraction form
    66,910.50/145,485 = 145,485/x
  3. Step 3: Cross multiply
    66,910.50x = 145,485 × 145,485
  4. Step 4: Simplify right side
    66,910.50x = 21,165,885,225
  5. Step 5: Solve for x
    x = 21,165,885,225/66,910.50
  6. Step 6: Final answer
    x = 316,331.30

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.