Home / 85,981.43-128,922.46-33,329.41

Finding the Fourth Proportional to 85,981.43, 128,922.46 and 33,329.41

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Solution

The fourth proportional to 85,981.43, 128,922.46 and 33,329.41 is: 49,974.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,981.43 : 128,922.46 = 33,329.41 : x
  2. Step 2: Convert to fraction form
    85,981.43/128,922.46 = 33,329.41/x
  3. Step 3: Cross multiply
    85,981.43x = 128,922.46 × 33,329.41
  4. Step 4: Simplify right side
    85,981.43x = 4,296,909,121.92
  5. Step 5: Solve for x
    x = 4,296,909,121.92/85,981.43
  6. Step 6: Final answer
    x = 49,974.85

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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.