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Finding the Fourth Proportional to 69,759.91, 104,639.63 and 19,158.98

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Solution

The fourth proportional to 69,759.91, 104,639.63 and 19,158.98 is: 28,738.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,759.91 : 104,639.63 = 19,158.98 : x
  2. Step 2: Convert to fraction form
    69,759.91/104,639.63 = 19,158.98/x
  3. Step 3: Cross multiply
    69,759.91x = 104,639.63 × 19,158.98
  4. Step 4: Simplify right side
    69,759.91x = 2,004,789,178.03
  5. Step 5: Solve for x
    x = 2,004,789,178.03/69,759.91
  6. Step 6: Final answer
    x = 28,738.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.