Home / 31,660.78-43,891.68-29,975.44

Finding the Fourth Proportional to 31,660.78, 43,891.68 and 29,975.44

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Solution

The fourth proportional to 31,660.78, 43,891.68 and 29,975.44 is: 41,555.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,660.78 : 43,891.68 = 29,975.44 : x
  2. Step 2: Convert to fraction form
    31,660.78/43,891.68 = 29,975.44/x
  3. Step 3: Cross multiply
    31,660.78x = 43,891.68 × 29,975.44
  4. Step 4: Simplify right side
    31,660.78x = 1,315,672,420.34
  5. Step 5: Solve for x
    x = 1,315,672,420.34/31,660.78
  6. Step 6: Final answer
    x = 41,555.28

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.