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Finding the Fourth Proportional to 48.19, 72.03 and 36.71

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Solution

The fourth proportional to 48.19, 72.03 and 36.71 is: 54.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.19 : 72.03 = 36.71 : x
  2. Step 2: Convert to fraction form
    48.19/72.03 = 36.71/x
  3. Step 3: Cross multiply
    48.19x = 72.03 × 36.71
  4. Step 4: Simplify right side
    48.19x = 2,644.22
  5. Step 5: Solve for x
    x = 2,644.22/48.19
  6. Step 6: Final answer
    x = 54.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.