Home / 78,741.82-118,029.18-38,704.34

Finding the Fourth Proportional to 78,741.82, 118,029.18 and 38,704.34

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Solution

The fourth proportional to 78,741.82, 118,029.18 and 38,704.34 is: 58,015.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,741.82 : 118,029.18 = 38,704.34 : x
  2. Step 2: Convert to fraction form
    78,741.82/118,029.18 = 38,704.34/x
  3. Step 3: Cross multiply
    78,741.82x = 118,029.18 × 38,704.34
  4. Step 4: Simplify right side
    78,741.82x = 4,568,241,735.14
  5. Step 5: Solve for x
    x = 4,568,241,735.14/78,741.82
  6. Step 6: Final answer
    x = 58,015.44

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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.