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Finding the Fourth Proportional to 51,189.99, 76,766.63 and 19,608.93

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Solution

The fourth proportional to 51,189.99, 76,766.63 and 19,608.93 is: 29,406.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,189.99 : 76,766.63 = 19,608.93 : x
  2. Step 2: Convert to fraction form
    51,189.99/76,766.63 = 19,608.93/x
  3. Step 3: Cross multiply
    51,189.99x = 76,766.63 × 19,608.93
  4. Step 4: Simplify right side
    51,189.99x = 1,505,311,375.96
  5. Step 5: Solve for x
    x = 1,505,311,375.96/51,189.99
  6. Step 6: Final answer
    x = 29,406.36

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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.