Home / 80,660.95-120,880.69-41,135.04

Finding the Fourth Proportional to 80,660.95, 120,880.69 and 41,135.04

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Solution

The fourth proportional to 80,660.95, 120,880.69 and 41,135.04 is: 61,646.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,660.95 : 120,880.69 = 41,135.04 : x
  2. Step 2: Convert to fraction form
    80,660.95/120,880.69 = 41,135.04/x
  3. Step 3: Cross multiply
    80,660.95x = 120,880.69 × 41,135.04
  4. Step 4: Simplify right side
    80,660.95x = 4,972,431,915.54
  5. Step 5: Solve for x
    x = 4,972,431,915.54/80,660.95
  6. Step 6: Final answer
    x = 61,646.09

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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.