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Finding the Fourth Proportional to 76,649.80, 114,906.30 and 29,891.80

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Solution

The fourth proportional to 76,649.80, 114,906.30 and 29,891.80 is: 44,811.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,649.80 : 114,906.30 = 29,891.80 : x
  2. Step 2: Convert to fraction form
    76,649.80/114,906.30 = 29,891.80/x
  3. Step 3: Cross multiply
    76,649.80x = 114,906.30 × 29,891.80
  4. Step 4: Simplify right side
    76,649.80x = 3,434,756,138.34
  5. Step 5: Solve for x
    x = 3,434,756,138.34/76,649.80
  6. Step 6: Final answer
    x = 44,811.03

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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.