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Finding the Fourth Proportional to 68,338.65, 102,418.52 and 36,711.75

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Solution

The fourth proportional to 68,338.65, 102,418.52 and 36,711.75 is: 55,019.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,338.65 : 102,418.52 = 36,711.75 : x
  2. Step 2: Convert to fraction form
    68,338.65/102,418.52 = 36,711.75/x
  3. Step 3: Cross multiply
    68,338.65x = 102,418.52 × 36,711.75
  4. Step 4: Simplify right side
    68,338.65x = 3,759,963,193.39
  5. Step 5: Solve for x
    x = 3,759,963,193.39/68,338.65
  6. Step 6: Final answer
    x = 55,019.57

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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.