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Finding the Fourth Proportional to 78,797.70, 118,198.26 and 43,959.06

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Solution

The fourth proportional to 78,797.70, 118,198.26 and 43,959.06 is: 65,939.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,797.70 : 118,198.26 = 43,959.06 : x
  2. Step 2: Convert to fraction form
    78,797.70/118,198.26 = 43,959.06/x
  3. Step 3: Cross multiply
    78,797.70x = 118,198.26 × 43,959.06
  4. Step 4: Simplify right side
    78,797.70x = 5,195,884,403.24
  5. Step 5: Solve for x
    x = 5,195,884,403.24/78,797.70
  6. Step 6: Final answer
    x = 65,939.54

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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.