Home / 54,438.68-81,626.23-21,119.81

Finding the Fourth Proportional to 54,438.68, 81,626.23 and 21,119.81

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Solution

The fourth proportional to 54,438.68, 81,626.23 and 21,119.81 is: 31,667.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,438.68 : 81,626.23 = 21,119.81 : x
  2. Step 2: Convert to fraction form
    54,438.68/81,626.23 = 21,119.81/x
  3. Step 3: Cross multiply
    54,438.68x = 81,626.23 × 21,119.81
  4. Step 4: Simplify right side
    54,438.68x = 1,723,930,363.02
  5. Step 5: Solve for x
    x = 1,723,930,363.02/54,438.68
  6. Step 6: Final answer
    x = 31,667.38

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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.