Home / 78,008.45-117,205.25-49,940.73

Finding the Fourth Proportional to 78,008.45, 117,205.25 and 49,940.73

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Solution

The fourth proportional to 78,008.45, 117,205.25 and 49,940.73 is: 75,034.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,008.45 : 117,205.25 = 49,940.73 : x
  2. Step 2: Convert to fraction form
    78,008.45/117,205.25 = 49,940.73/x
  3. Step 3: Cross multiply
    78,008.45x = 117,205.25 × 49,940.73
  4. Step 4: Simplify right side
    78,008.45x = 5,853,315,495.13
  5. Step 5: Solve for x
    x = 5,853,315,495.13/78,008.45
  6. Step 6: Final answer
    x = 75,034.38

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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.