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Finding the Fourth Proportional to 69,687.81, 96,175.61 and 39,474.41

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Solution

The fourth proportional to 69,687.81, 96,175.61 and 39,474.41 is: 54,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,687.81 : 96,175.61 = 39,474.41 : x
  2. Step 2: Convert to fraction form
    69,687.81/96,175.61 = 39,474.41/x
  3. Step 3: Cross multiply
    69,687.81x = 96,175.61 × 39,474.41
  4. Step 4: Simplify right side
    69,687.81x = 3,796,474,782.89
  5. Step 5: Solve for x
    x = 3,796,474,782.89/69,687.81
  6. Step 6: Final answer
    x = 54,478.32

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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.