Home / 54,041.21-74,571.20-31,375.78

Finding the Fourth Proportional to 54,041.21, 74,571.20 and 31,375.78

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Solution

The fourth proportional to 54,041.21, 74,571.20 and 31,375.78 is: 43,295.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,041.21 : 74,571.20 = 31,375.78 : x
  2. Step 2: Convert to fraction form
    54,041.21/74,571.20 = 31,375.78/x
  3. Step 3: Cross multiply
    54,041.21x = 74,571.20 × 31,375.78
  4. Step 4: Simplify right side
    54,041.21x = 2,339,729,361.16
  5. Step 5: Solve for x
    x = 2,339,729,361.16/54,041.21
  6. Step 6: Final answer
    x = 43,295.28

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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.