Home / 78,077.82-117,099.20-35,917.42

Finding the Fourth Proportional to 78,077.82, 117,099.20 and 35,917.42

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Solution

The fourth proportional to 78,077.82, 117,099.20 and 35,917.42 is: 53,868.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,077.82 : 117,099.20 = 35,917.42 : x
  2. Step 2: Convert to fraction form
    78,077.82/117,099.20 = 35,917.42/x
  3. Step 3: Cross multiply
    78,077.82x = 117,099.20 × 35,917.42
  4. Step 4: Simplify right side
    78,077.82x = 4,205,901,148.06
  5. Step 5: Solve for x
    x = 4,205,901,148.06/78,077.82
  6. Step 6: Final answer
    x = 53,868.07

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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.