Home / 54,918.68-82,387.74-20,723.72

Finding the Fourth Proportional to 54,918.68, 82,387.74 and 20,723.72

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Solution

The fourth proportional to 54,918.68, 82,387.74 and 20,723.72 is: 31,089.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,918.68 : 82,387.74 = 20,723.72 : x
  2. Step 2: Convert to fraction form
    54,918.68/82,387.74 = 20,723.72/x
  3. Step 3: Cross multiply
    54,918.68x = 82,387.74 × 20,723.72
  4. Step 4: Simplify right side
    54,918.68x = 1,707,380,455.19
  5. Step 5: Solve for x
    x = 1,707,380,455.19/54,918.68
  6. Step 6: Final answer
    x = 31,089.25

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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.