Home / 76,743.22-115,131.30-43,479.22

Finding the Fourth Proportional to 76,743.22, 115,131.30 and 43,479.22

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Solution

The fourth proportional to 76,743.22, 115,131.30 and 43,479.22 is: 65,228.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,743.22 : 115,131.30 = 43,479.22 : x
  2. Step 2: Convert to fraction form
    76,743.22/115,131.30 = 43,479.22/x
  3. Step 3: Cross multiply
    76,743.22x = 115,131.30 × 43,479.22
  4. Step 4: Simplify right side
    76,743.22x = 5,005,819,121.59
  5. Step 5: Solve for x
    x = 5,005,819,121.59/76,743.22
  6. Step 6: Final answer
    x = 65,228.16

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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.