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Finding the Fourth Proportional to 79,690.65, 119,540.30 and 29,783.85

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Solution

The fourth proportional to 79,690.65, 119,540.30 and 29,783.85 is: 44,677.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,690.65 : 119,540.30 = 29,783.85 : x
  2. Step 2: Convert to fraction form
    79,690.65/119,540.30 = 29,783.85/x
  3. Step 3: Cross multiply
    79,690.65x = 119,540.30 × 29,783.85
  4. Step 4: Simplify right side
    79,690.65x = 3,560,370,215.24
  5. Step 5: Solve for x
    x = 3,560,370,215.24/79,690.65
  6. Step 6: Final answer
    x = 44,677.39

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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.