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Finding the Fourth Proportional to 69,672.85, 96,145.31 and 39,458.39

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Solution

The fourth proportional to 69,672.85, 96,145.31 and 39,458.39 is: 54,450.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,672.85 : 96,145.31 = 39,458.39 : x
  2. Step 2: Convert to fraction form
    69,672.85/96,145.31 = 39,458.39/x
  3. Step 3: Cross multiply
    69,672.85x = 96,145.31 × 39,458.39
  4. Step 4: Simplify right side
    69,672.85x = 3,793,738,460.63
  5. Step 5: Solve for x
    x = 3,793,738,460.63/69,672.85
  6. Step 6: Final answer
    x = 54,450.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.