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Finding the Fourth Proportional to 67,181.80, 100,737.84 and 19,790.74

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Solution

The fourth proportional to 67,181.80, 100,737.84 and 19,790.74 is: 29,675.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,181.80 : 100,737.84 = 19,790.74 : x
  2. Step 2: Convert to fraction form
    67,181.80/100,737.84 = 19,790.74/x
  3. Step 3: Cross multiply
    67,181.80x = 100,737.84 × 19,790.74
  4. Step 4: Simplify right side
    67,181.80x = 1,993,676,399.60
  5. Step 5: Solve for x
    x = 1,993,676,399.60/67,181.80
  6. Step 6: Final answer
    x = 29,675.84

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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.