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Finding the Fourth Proportional to 69,902.56, 96,468.93 and 39,687.31

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Solution

The fourth proportional to 69,902.56, 96,468.93 and 39,687.31 is: 54,770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,902.56 : 96,468.93 = 39,687.31 : x
  2. Step 2: Convert to fraction form
    69,902.56/96,468.93 = 39,687.31/x
  3. Step 3: Cross multiply
    69,902.56x = 96,468.93 × 39,687.31
  4. Step 4: Simplify right side
    69,902.56x = 3,828,592,330.28
  5. Step 5: Solve for x
    x = 3,828,592,330.28/69,902.56
  6. Step 6: Final answer
    x = 54,770.42

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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.