Home / 78,503.48-117,993.13-51,940.07

Finding the Fourth Proportional to 78,503.48, 117,993.13 and 51,940.07

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Solution

The fourth proportional to 78,503.48, 117,993.13 and 51,940.07 is: 78,067.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,503.48 : 117,993.13 = 51,940.07 : x
  2. Step 2: Convert to fraction form
    78,503.48/117,993.13 = 51,940.07/x
  3. Step 3: Cross multiply
    78,503.48x = 117,993.13 × 51,940.07
  4. Step 4: Simplify right side
    78,503.48x = 6,128,571,596.85
  5. Step 5: Solve for x
    x = 6,128,571,596.85/78,503.48
  6. Step 6: Final answer
    x = 78,067.51

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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.