Home / 54,090.72-81,142.92-18,558.96

Finding the Fourth Proportional to 54,090.72, 81,142.92 and 18,558.96

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Solution

The fourth proportional to 54,090.72, 81,142.92 and 18,558.96 is: 27,840.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,090.72 : 81,142.92 = 18,558.96 : x
  2. Step 2: Convert to fraction form
    54,090.72/81,142.92 = 18,558.96/x
  3. Step 3: Cross multiply
    54,090.72x = 81,142.92 × 18,558.96
  4. Step 4: Simplify right side
    54,090.72x = 1,505,928,206.56
  5. Step 5: Solve for x
    x = 1,505,928,206.56/54,090.72
  6. Step 6: Final answer
    x = 27,840.79

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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.