Home / 85,983.43-128,925.46-33,331.41

Finding the Fourth Proportional to 85,983.43, 128,925.46 and 33,331.41

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Solution

The fourth proportional to 85,983.43, 128,925.46 and 33,331.41 is: 49,977.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,983.43 : 128,925.46 = 33,331.41 : x
  2. Step 2: Convert to fraction form
    85,983.43/128,925.46 = 33,331.41/x
  3. Step 3: Cross multiply
    85,983.43x = 128,925.46 × 33,331.41
  4. Step 4: Simplify right side
    85,983.43x = 4,297,267,366.70
  5. Step 5: Solve for x
    x = 4,297,267,366.70/85,983.43
  6. Step 6: Final answer
    x = 49,977.85

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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.