Home / 54,431.38-81,652.20-21,153.99

Finding the Fourth Proportional to 54,431.38, 81,652.20 and 21,153.99

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Solution

The fourth proportional to 54,431.38, 81,652.20 and 21,153.99 is: 31,732.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,431.38 : 81,652.20 = 21,153.99 : x
  2. Step 2: Convert to fraction form
    54,431.38/81,652.20 = 21,153.99/x
  3. Step 3: Cross multiply
    54,431.38x = 81,652.20 × 21,153.99
  4. Step 4: Simplify right side
    54,431.38x = 1,727,270,168.14
  5. Step 5: Solve for x
    x = 1,727,270,168.14/54,431.38
  6. Step 6: Final answer
    x = 31,732.99

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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.