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Finding the Fourth Proportional to 54,358.81, 81,471.29 and 25,910.72

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Solution

The fourth proportional to 54,358.81, 81,471.29 and 25,910.72 is: 38,834.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,358.81 : 81,471.29 = 25,910.72 : x
  2. Step 2: Convert to fraction form
    54,358.81/81,471.29 = 25,910.72/x
  3. Step 3: Cross multiply
    54,358.81x = 81,471.29 × 25,910.72
  4. Step 4: Simplify right side
    54,358.81x = 2,110,979,551.84
  5. Step 5: Solve for x
    x = 2,110,979,551.84/54,358.81
  6. Step 6: Final answer
    x = 38,834.18

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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.