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Finding the Fourth Proportional to 54,321.38, 81,495.38 and 43,885.94

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Solution

The fourth proportional to 54,321.38, 81,495.38 and 43,885.94 is: 65,839.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,321.38 : 81,495.38 = 43,885.94 : x
  2. Step 2: Convert to fraction form
    54,321.38/81,495.38 = 43,885.94/x
  3. Step 3: Cross multiply
    54,321.38x = 81,495.38 × 43,885.94
  4. Step 4: Simplify right side
    54,321.38x = 3,576,501,341.27
  5. Step 5: Solve for x
    x = 3,576,501,341.27/54,321.38
  6. Step 6: Final answer
    x = 65,839.67

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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.