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Finding the Fourth Proportional to 76,571.89, 114,779.46 and 74,650.97

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Solution

The fourth proportional to 76,571.89, 114,779.46 and 74,650.97 is: 111,900.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,571.89 : 114,779.46 = 74,650.97 : x
  2. Step 2: Convert to fraction form
    76,571.89/114,779.46 = 74,650.97/x
  3. Step 3: Cross multiply
    76,571.89x = 114,779.46 × 74,650.97
  4. Step 4: Simplify right side
    76,571.89x = 8,568,398,591.97
  5. Step 5: Solve for x
    x = 8,568,398,591.97/76,571.89
  6. Step 6: Final answer
    x = 111,900.06

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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.