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Finding the Fourth Proportional to 51,161.82, 76,640.67 and 40,649.64

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Solution

The fourth proportional to 51,161.82, 76,640.67 and 40,649.64 is: 60,893.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,161.82 : 76,640.67 = 40,649.64 : x
  2. Step 2: Convert to fraction form
    51,161.82/76,640.67 = 40,649.64/x
  3. Step 3: Cross multiply
    51,161.82x = 76,640.67 × 40,649.64
  4. Step 4: Simplify right side
    51,161.82x = 3,115,415,644.86
  5. Step 5: Solve for x
    x = 3,115,415,644.86/51,161.82
  6. Step 6: Final answer
    x = 60,893.37

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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.