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Finding the Fourth Proportional to 69,695.61, 104,576.90 and 38,104.40

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Solution

The fourth proportional to 69,695.61, 104,576.90 and 38,104.40 is: 57,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,695.61 : 104,576.90 = 38,104.40 : x
  2. Step 2: Convert to fraction form
    69,695.61/104,576.90 = 38,104.40/x
  3. Step 3: Cross multiply
    69,695.61x = 104,576.90 × 38,104.40
  4. Step 4: Simplify right side
    69,695.61x = 3,984,839,912.33
  5. Step 5: Solve for x
    x = 3,984,839,912.33/69,695.61
  6. Step 6: Final answer
    x = 57,174.90

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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.