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Finding the Third Proportional to 30.09 and 61.88

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Solution

The third proportional to 30.09 and 61.88 is: 127.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.09 : 61.88 = 61.88 : x
  2. Step 2: Convert to fraction form
    30.09/61.88 = 61.88/x
  3. Step 3: Cross multiply
    30.09x = 61.88 × 61.88
  4. Step 4: Simplify right side
    30.09x = 3,828.52
  5. Step 5: Solve for x
    x = 3,828.52/30.09
  6. Step 6: Final answer
    x = 127.22

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.