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Finding the Fourth Proportional to 54,940.96, 82,410.81 and 13,387.96

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Solution

The fourth proportional to 54,940.96, 82,410.81 and 13,387.96 is: 20,081.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,940.96 : 82,410.81 = 13,387.96 : x
  2. Step 2: Convert to fraction form
    54,940.96/82,410.81 = 13,387.96/x
  3. Step 3: Cross multiply
    54,940.96x = 82,410.81 × 13,387.96
  4. Step 4: Simplify right side
    54,940.96x = 1,103,312,627.85
  5. Step 5: Solve for x
    x = 1,103,312,627.85/54,940.96
  6. Step 6: Final answer
    x = 20,081.79

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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.