Home / 76,795.22-115,149.47-31,791.15

Finding the Fourth Proportional to 76,795.22, 115,149.47 and 31,791.15

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Solution

The fourth proportional to 76,795.22, 115,149.47 and 31,791.15 is: 47,668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,795.22 : 115,149.47 = 31,791.15 : x
  2. Step 2: Convert to fraction form
    76,795.22/115,149.47 = 31,791.15/x
  3. Step 3: Cross multiply
    76,795.22x = 115,149.47 × 31,791.15
  4. Step 4: Simplify right side
    76,795.22x = 3,660,733,914.23
  5. Step 5: Solve for x
    x = 3,660,733,914.23/76,795.22
  6. Step 6: Final answer
    x = 47,668.77

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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.