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Finding the Fourth Proportional to 69,760.80, 104,658.84 and 30,324.96

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Solution

The fourth proportional to 69,760.80, 104,658.84 and 30,324.96 is: 45,495.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,760.80 : 104,658.84 = 30,324.96 : x
  2. Step 2: Convert to fraction form
    69,760.80/104,658.84 = 30,324.96/x
  3. Step 3: Cross multiply
    69,760.80x = 104,658.84 × 30,324.96
  4. Step 4: Simplify right side
    69,760.80x = 3,173,775,136.65
  5. Step 5: Solve for x
    x = 3,173,775,136.65/69,760.80
  6. Step 6: Final answer
    x = 45,495.11

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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.