Home / 78,147.75-117,180.32-35,991.03

Finding the Fourth Proportional to 78,147.75, 117,180.32 and 35,991.03

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Solution

The fourth proportional to 78,147.75, 117,180.32 and 35,991.03 is: 53,967.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,147.75 : 117,180.32 = 35,991.03 : x
  2. Step 2: Convert to fraction form
    78,147.75/117,180.32 = 35,991.03/x
  3. Step 3: Cross multiply
    78,147.75x = 117,180.32 × 35,991.03
  4. Step 4: Simplify right side
    78,147.75x = 4,217,440,232.57
  5. Step 5: Solve for x
    x = 4,217,440,232.57/78,147.75
  6. Step 6: Final answer
    x = 53,967.52

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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.