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Finding the Fourth Proportional to 69,209.60, 103,745.28 and 34,174.40

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Solution

The fourth proportional to 69,209.60, 103,745.28 and 34,174.40 is: 51,227.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,209.60 : 103,745.28 = 34,174.40 : x
  2. Step 2: Convert to fraction form
    69,209.60/103,745.28 = 34,174.40/x
  3. Step 3: Cross multiply
    69,209.60x = 103,745.28 × 34,174.40
  4. Step 4: Simplify right side
    69,209.60x = 3,545,432,696.83
  5. Step 5: Solve for x
    x = 3,545,432,696.83/69,209.60
  6. Step 6: Final answer
    x = 51,227.47

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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.