Home / 76,911.22-115,366.78-39,450.44

Finding the Fourth Proportional to 76,911.22, 115,366.78 and 39,450.44

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Solution

The fourth proportional to 76,911.22, 115,366.78 and 39,450.44 is: 59,175.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,911.22 : 115,366.78 = 39,450.44 : x
  2. Step 2: Convert to fraction form
    76,911.22/115,366.78 = 39,450.44/x
  3. Step 3: Cross multiply
    76,911.22x = 115,366.78 × 39,450.44
  4. Step 4: Simplify right side
    76,911.22x = 4,551,270,570.11
  5. Step 5: Solve for x
    x = 4,551,270,570.11/76,911.22
  6. Step 6: Final answer
    x = 59,175.64

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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.