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Finding the Fourth Proportional to 54,808.20, 82,212.30 and 39,863.70

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Solution

The fourth proportional to 54,808.20, 82,212.30 and 39,863.70 is: 59,795.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,808.20 : 82,212.30 = 39,863.70 : x
  2. Step 2: Convert to fraction form
    54,808.20/82,212.30 = 39,863.70/x
  3. Step 3: Cross multiply
    54,808.20x = 82,212.30 × 39,863.70
  4. Step 4: Simplify right side
    54,808.20x = 3,277,286,463.51
  5. Step 5: Solve for x
    x = 3,277,286,463.51/54,808.20
  6. Step 6: Final answer
    x = 59,795.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.