Home / 54,243.76-81,352.50-20,942.56

Finding the Fourth Proportional to 54,243.76, 81,352.50 and 20,942.56

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Solution

The fourth proportional to 54,243.76, 81,352.50 and 20,942.56 is: 31,408.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,243.76 : 81,352.50 = 20,942.56 : x
  2. Step 2: Convert to fraction form
    54,243.76/81,352.50 = 20,942.56/x
  3. Step 3: Cross multiply
    54,243.76x = 81,352.50 × 20,942.56
  4. Step 4: Simplify right side
    54,243.76x = 1,703,729,612.40
  5. Step 5: Solve for x
    x = 1,703,729,612.40/54,243.76
  6. Step 6: Final answer
    x = 31,408.77

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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.