Home / 54,435.78-81,668.79-31,078.62

Finding the Fourth Proportional to 54,435.78, 81,668.79 and 31,078.62

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Solution

The fourth proportional to 54,435.78, 81,668.79 and 31,078.62 is: 46,626.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435.78 : 81,668.79 = 31,078.62 : x
  2. Step 2: Convert to fraction form
    54,435.78/81,668.79 = 31,078.62/x
  3. Step 3: Cross multiply
    54,435.78x = 81,668.79 × 31,078.62
  4. Step 4: Simplify right side
    54,435.78x = 2,538,153,290.27
  5. Step 5: Solve for x
    x = 2,538,153,290.27/54,435.78
  6. Step 6: Final answer
    x = 46,626.56

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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.