Home / 85,998.30-128,997.45-44,007.90

Finding the Fourth Proportional to 85,998.30, 128,997.45 and 44,007.90

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Solution

The fourth proportional to 85,998.30, 128,997.45 and 44,007.90 is: 66,011.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,998.30 : 128,997.45 = 44,007.90 : x
  2. Step 2: Convert to fraction form
    85,998.30/128,997.45 = 44,007.90/x
  3. Step 3: Cross multiply
    85,998.30x = 128,997.45 × 44,007.90
  4. Step 4: Simplify right side
    85,998.30x = 5,676,906,879.86
  5. Step 5: Solve for x
    x = 5,676,906,879.86/85,998.30
  6. Step 6: Final answer
    x = 66,011.85

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Similar ratio
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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.