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Finding the Fourth Proportional to 68,601.74, 102,904.42 and 18,682.86

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Solution

The fourth proportional to 68,601.74, 102,904.42 and 18,682.86 is: 28,024.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,601.74 : 102,904.42 = 18,682.86 : x
  2. Step 2: Convert to fraction form
    68,601.74/102,904.42 = 18,682.86/x
  3. Step 3: Cross multiply
    68,601.74x = 102,904.42 × 18,682.86
  4. Step 4: Simplify right side
    68,601.74x = 1,922,548,872.24
  5. Step 5: Solve for x
    x = 1,922,548,872.24/68,601.74
  6. Step 6: Final answer
    x = 28,024.78

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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.