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Finding the Fourth Proportional to 69,309.40, 103,963.12 and 16,718.44

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Solution

The fourth proportional to 69,309.40, 103,963.12 and 16,718.44 is: 25,077.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,309.40 : 103,963.12 = 16,718.44 : x
  2. Step 2: Convert to fraction form
    69,309.40/103,963.12 = 16,718.44/x
  3. Step 3: Cross multiply
    69,309.40x = 103,963.12 × 16,718.44
  4. Step 4: Simplify right side
    69,309.40x = 1,738,101,183.93
  5. Step 5: Solve for x
    x = 1,738,101,183.93/69,309.40
  6. Step 6: Final answer
    x = 25,077.42

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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.