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Finding the Fourth Proportional to 80,367.71, 120,571.59 and 56,721.44

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Solution

The fourth proportional to 80,367.71, 120,571.59 and 56,721.44 is: 85,096.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,367.71 : 120,571.59 = 56,721.44 : x
  2. Step 2: Convert to fraction form
    80,367.71/120,571.59 = 56,721.44/x
  3. Step 3: Cross multiply
    80,367.71x = 120,571.59 × 56,721.44
  4. Step 4: Simplify right side
    80,367.71x = 6,838,993,605.03
  5. Step 5: Solve for x
    x = 6,838,993,605.03/80,367.71
  6. Step 6: Final answer
    x = 85,096.29

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1.5x scale

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.