Home / 54,315.72-74,928.24-40,143.96

Finding the Fourth Proportional to 54,315.72, 74,928.24 and 40,143.96

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Solution

The fourth proportional to 54,315.72, 74,928.24 and 40,143.96 is: 55,378.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,315.72 : 74,928.24 = 40,143.96 : x
  2. Step 2: Convert to fraction form
    54,315.72/74,928.24 = 40,143.96/x
  3. Step 3: Cross multiply
    54,315.72x = 74,928.24 × 40,143.96
  4. Step 4: Simplify right side
    54,315.72x = 3,007,916,269.43
  5. Step 5: Solve for x
    x = 3,007,916,269.43/54,315.72
  6. Step 6: Final answer
    x = 55,378.37

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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.