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Finding the Fourth Proportional to 68,991.37, 103,519.72 and 29,019.10

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Solution

The fourth proportional to 68,991.37, 103,519.72 and 29,019.10 is: 43,542.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,991.37 : 103,519.72 = 29,019.10 : x
  2. Step 2: Convert to fraction form
    68,991.37/103,519.72 = 29,019.10/x
  3. Step 3: Cross multiply
    68,991.37x = 103,519.72 × 29,019.10
  4. Step 4: Simplify right side
    68,991.37x = 3,004,049,106.65
  5. Step 5: Solve for x
    x = 3,004,049,106.65/68,991.37
  6. Step 6: Final answer
    x = 43,542.39

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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.