Home / 54,418.92-81,628.20-30,715.72

Finding the Fourth Proportional to 54,418.92, 81,628.20 and 30,715.72

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Solution

The fourth proportional to 54,418.92, 81,628.20 and 30,715.72 is: 46,073.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,418.92 : 81,628.20 = 30,715.72 : x
  2. Step 2: Convert to fraction form
    54,418.92/81,628.20 = 30,715.72/x
  3. Step 3: Cross multiply
    54,418.92x = 81,628.20 × 30,715.72
  4. Step 4: Simplify right side
    54,418.92x = 2,507,268,935.30
  5. Step 5: Solve for x
    x = 2,507,268,935.30/54,418.92
  6. Step 6: Final answer
    x = 46,073.48

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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.