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Finding the Fourth Proportional to 80,371.64, 110,941.56 and 54,859.74

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Solution

The fourth proportional to 80,371.64, 110,941.56 and 54,859.74 is: 75,726.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,371.64 : 110,941.56 = 54,859.74 : x
  2. Step 2: Convert to fraction form
    80,371.64/110,941.56 = 54,859.74/x
  3. Step 3: Cross multiply
    80,371.64x = 110,941.56 × 54,859.74
  4. Step 4: Simplify right side
    80,371.64x = 6,086,225,136.79
  5. Step 5: Solve for x
    x = 6,086,225,136.79/80,371.64
  6. Step 6: Final answer
    x = 75,726.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.