Home / 54,233.94-81,288.45-20,939.34

Finding the Fourth Proportional to 54,233.94, 81,288.45 and 20,939.34

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Solution

The fourth proportional to 54,233.94, 81,288.45 and 20,939.34 is: 31,384.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,233.94 : 81,288.45 = 20,939.34 : x
  2. Step 2: Convert to fraction form
    54,233.94/81,288.45 = 20,939.34/x
  3. Step 3: Cross multiply
    54,233.94x = 81,288.45 × 20,939.34
  4. Step 4: Simplify right side
    54,233.94x = 1,702,126,492.62
  5. Step 5: Solve for x
    x = 1,702,126,492.62/54,233.94
  6. Step 6: Final answer
    x = 31,384.89

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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.