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Finding the Fourth Proportional to 54,379.95, 81,546.83 and 21,093.81

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Solution

The fourth proportional to 54,379.95, 81,546.83 and 21,093.81 is: 31,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,379.95 : 81,546.83 = 21,093.81 : x
  2. Step 2: Convert to fraction form
    54,379.95/81,546.83 = 21,093.81/x
  3. Step 3: Cross multiply
    54,379.95x = 81,546.83 × 21,093.81
  4. Step 4: Simplify right side
    54,379.95x = 1,720,133,338.12
  5. Step 5: Solve for x
    x = 1,720,133,338.12/54,379.95
  6. Step 6: Final answer
    x = 31,631.76

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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.