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Finding the Fourth Proportional to 69,399.96, 103,942.28 and 54,313.08

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Solution

The fourth proportional to 69,399.96, 103,942.28 and 54,313.08 is: 81,346.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,399.96 : 103,942.28 = 54,313.08 : x
  2. Step 2: Convert to fraction form
    69,399.96/103,942.28 = 54,313.08/x
  3. Step 3: Cross multiply
    69,399.96x = 103,942.28 × 54,313.08
  4. Step 4: Simplify right side
    69,399.96x = 5,645,425,369.02
  5. Step 5: Solve for x
    x = 5,645,425,369.02/69,399.96
  6. Step 6: Final answer
    x = 81,346.23

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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.