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Finding the Fourth Proportional to 52,796.92, 79,189.23 and 21,205.71

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Solution

The fourth proportional to 52,796.92, 79,189.23 and 21,205.71 is: 31,806.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,796.92 : 79,189.23 = 21,205.71 : x
  2. Step 2: Convert to fraction form
    52,796.92/79,189.23 = 21,205.71/x
  3. Step 3: Cross multiply
    52,796.92x = 79,189.23 × 21,205.71
  4. Step 4: Simplify right side
    52,796.92x = 1,679,263,450.56
  5. Step 5: Solve for x
    x = 1,679,263,450.56/52,796.92
  6. Step 6: Final answer
    x = 31,806.09

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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.