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Finding the Fourth Proportional to 79,930.85, 119,813.66 and 29,975.72

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Solution

The fourth proportional to 79,930.85, 119,813.66 and 29,975.72 is: 44,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,930.85 : 119,813.66 = 29,975.72 : x
  2. Step 2: Convert to fraction form
    79,930.85/119,813.66 = 29,975.72/x
  3. Step 3: Cross multiply
    79,930.85x = 119,813.66 × 29,975.72
  4. Step 4: Simplify right side
    79,930.85x = 3,591,500,574.46
  5. Step 5: Solve for x
    x = 3,591,500,574.46/79,930.85
  6. Step 6: Final answer
    x = 44,932.60

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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.