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Finding the Fourth Proportional to 69,771.87, 96,287.72 and 39,969.63

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Solution

The fourth proportional to 69,771.87, 96,287.72 and 39,969.63 is: 55,159.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,771.87 : 96,287.72 = 39,969.63 : x
  2. Step 2: Convert to fraction form
    69,771.87/96,287.72 = 39,969.63/x
  3. Step 3: Cross multiply
    69,771.87x = 96,287.72 × 39,969.63
  4. Step 4: Simplify right side
    69,771.87x = 3,848,584,342.10
  5. Step 5: Solve for x
    x = 3,848,584,342.10/69,771.87
  6. Step 6: Final answer
    x = 55,159.54

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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.