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Finding the Fourth Proportional to 69,689.76, 96,168.79 and 39,474.48

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Solution

The fourth proportional to 69,689.76, 96,168.79 and 39,474.48 is: 54,473.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,689.76 : 96,168.79 = 39,474.48 : x
  2. Step 2: Convert to fraction form
    69,689.76/96,168.79 = 39,474.48/x
  3. Step 3: Cross multiply
    69,689.76x = 96,168.79 × 39,474.48
  4. Step 4: Simplify right side
    69,689.76x = 3,796,212,299.26
  5. Step 5: Solve for x
    x = 3,796,212,299.26/69,689.76
  6. Step 6: Final answer
    x = 54,473.03

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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.