Home / 76,912.07-115,367.60-41,390.12

Finding the Fourth Proportional to 76,912.07, 115,367.60 and 41,390.12

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Solution

The fourth proportional to 76,912.07, 115,367.60 and 41,390.12 is: 62,084.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912.07 : 115,367.60 = 41,390.12 : x
  2. Step 2: Convert to fraction form
    76,912.07/115,367.60 = 41,390.12/x
  3. Step 3: Cross multiply
    76,912.07x = 115,367.60 × 41,390.12
  4. Step 4: Simplify right side
    76,912.07x = 4,775,078,231.27
  5. Step 5: Solve for x
    x = 4,775,078,231.27/76,912.07
  6. Step 6: Final answer
    x = 62,084.90

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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.