Home / 41,388.16-57,112.32-28,840

Finding the Fourth Proportional to 41,388.16, 57,112.32 and 28,840

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Solution

The fourth proportional to 41,388.16, 57,112.32 and 28,840 is: 39,796.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,388.16 : 57,112.32 = 28,840 : x
  2. Step 2: Convert to fraction form
    41,388.16/57,112.32 = 28,840/x
  3. Step 3: Cross multiply
    41,388.16x = 57,112.32 × 28,840
  4. Step 4: Simplify right side
    41,388.16x = 1,647,119,308.80
  5. Step 5: Solve for x
    x = 1,647,119,308.80/41,388.16
  6. Step 6: Final answer
    x = 39,796.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.