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Finding the Third Proportional to 48.75 and 71.13

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Solution

The third proportional to 48.75 and 71.13 is: 103.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.75 : 71.13 = 71.13 : x
  2. Step 2: Convert to fraction form
    48.75/71.13 = 71.13/x
  3. Step 3: Cross multiply
    48.75x = 71.13 × 71.13
  4. Step 4: Simplify right side
    48.75x = 5,058.77
  5. Step 5: Solve for x
    x = 5,058.77/48.75
  6. Step 6: Final answer
    x = 103.77

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.