Home / 54,078.94-74,628.51-31,431.19

Finding the Fourth Proportional to 54,078.94, 74,628.51 and 31,431.19

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Solution

The fourth proportional to 54,078.94, 74,628.51 and 31,431.19 is: 43,374.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,078.94 : 74,628.51 = 31,431.19 : x
  2. Step 2: Convert to fraction form
    54,078.94/74,628.51 = 31,431.19/x
  3. Step 3: Cross multiply
    54,078.94x = 74,628.51 × 31,431.19
  4. Step 4: Simplify right side
    54,078.94x = 2,345,662,712.72
  5. Step 5: Solve for x
    x = 2,345,662,712.72/54,078.94
  6. Step 6: Final answer
    x = 43,374.79

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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.