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Finding the Fourth Proportional to 115,809.41, 173,682.83 and 40,919.65

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Solution

The fourth proportional to 115,809.41, 173,682.83 and 40,919.65 is: 61,368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,809.41 : 173,682.83 = 40,919.65 : x
  2. Step 2: Convert to fraction form
    115,809.41/173,682.83 = 40,919.65/x
  3. Step 3: Cross multiply
    115,809.41x = 173,682.83 × 40,919.65
  4. Step 4: Simplify right side
    115,809.41x = 7,107,040,282.70
  5. Step 5: Solve for x
    x = 7,107,040,282.70/115,809.41
  6. Step 6: Final answer
    x = 61,368.42

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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.