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Finding the Third Proportional to 30,785.06 and 66,278.25

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Solution

The third proportional to 30,785.06 and 66,278.25 is: 142,692.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,785.06 : 66,278.25 = 66,278.25 : x
  2. Step 2: Convert to fraction form
    30,785.06/66,278.25 = 66,278.25/x
  3. Step 3: Cross multiply
    30,785.06x = 66,278.25 × 66,278.25
  4. Step 4: Simplify right side
    30,785.06x = 4,392,806,423.06
  5. Step 5: Solve for x
    x = 4,392,806,423.06/30,785.06
  6. Step 6: Final answer
    x = 142,692.79

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.