Home / 85,981.58-128,966.26-22,800.30

Finding the Fourth Proportional to 85,981.58, 128,966.26 and 22,800.30

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Solution

The fourth proportional to 85,981.58, 128,966.26 and 22,800.30 is: 34,198.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,981.58 : 128,966.26 = 22,800.30 : x
  2. Step 2: Convert to fraction form
    85,981.58/128,966.26 = 22,800.30/x
  3. Step 3: Cross multiply
    85,981.58x = 128,966.26 × 22,800.30
  4. Step 4: Simplify right side
    85,981.58x = 2,940,469,417.88
  5. Step 5: Solve for x
    x = 2,940,469,417.88/85,981.58
  6. Step 6: Final answer
    x = 34,198.83

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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.