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Finding the Fourth Proportional to 80,076.66, 120,040.70 and 37,976.43

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Solution

The fourth proportional to 80,076.66, 120,040.70 and 37,976.43 is: 56,929.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,076.66 : 120,040.70 = 37,976.43 : x
  2. Step 2: Convert to fraction form
    80,076.66/120,040.70 = 37,976.43/x
  3. Step 3: Cross multiply
    80,076.66x = 120,040.70 × 37,976.43
  4. Step 4: Simplify right side
    80,076.66x = 4,558,717,240.70
  5. Step 5: Solve for x
    x = 4,558,717,240.70/80,076.66
  6. Step 6: Final answer
    x = 56,929.41

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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.