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Finding the Fourth Proportional to 51,367.05, 76,995.90 and 19,764.90

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Solution

The fourth proportional to 51,367.05, 76,995.90 and 19,764.90 is: 29,626.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,367.05 : 76,995.90 = 19,764.90 : x
  2. Step 2: Convert to fraction form
    51,367.05/76,995.90 = 19,764.90/x
  3. Step 3: Cross multiply
    51,367.05x = 76,995.90 × 19,764.90
  4. Step 4: Simplify right side
    51,367.05x = 1,521,816,263.91
  5. Step 5: Solve for x
    x = 1,521,816,263.91/51,367.05
  6. Step 6: Final answer
    x = 29,626.31

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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.