Home / 85,994.38-128,997.25-22,813.61

Finding the Fourth Proportional to 85,994.38, 128,997.25 and 22,813.61

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Solution

The fourth proportional to 85,994.38, 128,997.25 and 22,813.61 is: 34,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,994.38 : 128,997.25 = 22,813.61 : x
  2. Step 2: Convert to fraction form
    85,994.38/128,997.25 = 22,813.61/x
  3. Step 3: Cross multiply
    85,994.38x = 128,997.25 × 22,813.61
  4. Step 4: Simplify right side
    85,994.38x = 2,942,892,952.57
  5. Step 5: Solve for x
    x = 2,942,892,952.57/85,994.38
  6. Step 6: Final answer
    x = 34,221.92

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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.