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Finding the Fourth Proportional to 69,777.88, 104,680.66 and 19,859.94

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Solution

The fourth proportional to 69,777.88, 104,680.66 and 19,859.94 is: 29,793.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,777.88 : 104,680.66 = 19,859.94 : x
  2. Step 2: Convert to fraction form
    69,777.88/104,680.66 = 19,859.94/x
  3. Step 3: Cross multiply
    69,777.88x = 104,680.66 × 19,859.94
  4. Step 4: Simplify right side
    69,777.88x = 2,078,951,626.76
  5. Step 5: Solve for x
    x = 2,078,951,626.76/69,777.88
  6. Step 6: Final answer
    x = 29,793.85

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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.