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Finding the Third Proportional to 30,705 and 67,255

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Solution

The third proportional to 30,705 and 67,255 is: 147,312.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,705 : 67,255 = 67,255 : x
  2. Step 2: Convert to fraction form
    30,705/67,255 = 67,255/x
  3. Step 3: Cross multiply
    30,705x = 67,255 × 67,255
  4. Step 4: Simplify right side
    30,705x = 4,523,235,025
  5. Step 5: Solve for x
    x = 4,523,235,025/30,705
  6. Step 6: Final answer
    x = 147,312.65

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.