Home / 78,191.21-117,196.09-35,982.68

Finding the Fourth Proportional to 78,191.21, 117,196.09 and 35,982.68

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Solution

The fourth proportional to 78,191.21, 117,196.09 and 35,982.68 is: 53,932.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,191.21 : 117,196.09 = 35,982.68 : x
  2. Step 2: Convert to fraction form
    78,191.21/117,196.09 = 35,982.68/x
  3. Step 3: Cross multiply
    78,191.21x = 117,196.09 × 35,982.68
  4. Step 4: Simplify right side
    78,191.21x = 4,217,029,488.21
  5. Step 5: Solve for x
    x = 4,217,029,488.21/78,191.21
  6. Step 6: Final answer
    x = 53,932.27

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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.