Home / 45,865.85-68,791.41-12,578.22

Finding the Fourth Proportional to 45,865.85, 68,791.41 and 12,578.22

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Solution

The fourth proportional to 45,865.85, 68,791.41 and 12,578.22 is: 18,865.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,865.85 : 68,791.41 = 12,578.22 : x
  2. Step 2: Convert to fraction form
    45,865.85/68,791.41 = 12,578.22/x
  3. Step 3: Cross multiply
    45,865.85x = 68,791.41 × 12,578.22
  4. Step 4: Simplify right side
    45,865.85x = 865,273,489.09
  5. Step 5: Solve for x
    x = 865,273,489.09/45,865.85
  6. Step 6: Final answer
    x = 18,865.31

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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.