Home / 54,135.12-74,704.24-31,473.15

Finding the Fourth Proportional to 54,135.12, 74,704.24 and 31,473.15

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Solution

The fourth proportional to 54,135.12, 74,704.24 and 31,473.15 is: 43,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,135.12 : 74,704.24 = 31,473.15 : x
  2. Step 2: Convert to fraction form
    54,135.12/74,704.24 = 31,473.15/x
  3. Step 3: Cross multiply
    54,135.12x = 74,704.24 × 31,473.15
  4. Step 4: Simplify right side
    54,135.12x = 2,351,177,751.16
  5. Step 5: Solve for x
    x = 2,351,177,751.16/54,135.12
  6. Step 6: Final answer
    x = 43,431.65

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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.