Home / 54,217.66-81,329.68-20,937.90

Finding the Fourth Proportional to 54,217.66, 81,329.68 and 20,937.90

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Solution

The fourth proportional to 54,217.66, 81,329.68 and 20,937.90 is: 31,408.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,217.66 : 81,329.68 = 20,937.90 : x
  2. Step 2: Convert to fraction form
    54,217.66/81,329.68 = 20,937.90/x
  3. Step 3: Cross multiply
    54,217.66x = 81,329.68 × 20,937.90
  4. Step 4: Simplify right side
    54,217.66x = 1,702,872,706.87
  5. Step 5: Solve for x
    x = 1,702,872,706.87/54,217.66
  6. Step 6: Final answer
    x = 31,408.08

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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.