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Finding the Fourth Proportional to 69,771.36, 104,645.88 and 30,317.88

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Solution

The fourth proportional to 69,771.36, 104,645.88 and 30,317.88 is: 45,471.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,771.36 : 104,645.88 = 30,317.88 : x
  2. Step 2: Convert to fraction form
    69,771.36/104,645.88 = 30,317.88/x
  3. Step 3: Cross multiply
    69,771.36x = 104,645.88 × 30,317.88
  4. Step 4: Simplify right side
    69,771.36x = 3,172,641,232.33
  5. Step 5: Solve for x
    x = 3,172,641,232.33/69,771.36
  6. Step 6: Final answer
    x = 45,471.97

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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.