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Finding the Fourth Proportional to 80,638.71, 120,957.93 and 33,280.44

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Solution

The fourth proportional to 80,638.71, 120,957.93 and 33,280.44 is: 49,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,638.71 : 120,957.93 = 33,280.44 : x
  2. Step 2: Convert to fraction form
    80,638.71/120,957.93 = 33,280.44/x
  3. Step 3: Cross multiply
    80,638.71x = 120,957.93 × 33,280.44
  4. Step 4: Simplify right side
    80,638.71x = 4,025,533,131.89
  5. Step 5: Solve for x
    x = 4,025,533,131.89/80,638.71
  6. Step 6: Final answer
    x = 49,920.60

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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.