Home / 85,998.20-128,997.30-41,711.45

Finding the Fourth Proportional to 85,998.20, 128,997.30 and 41,711.45

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Solution

The fourth proportional to 85,998.20, 128,997.30 and 41,711.45 is: 62,567.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,998.20 : 128,997.30 = 41,711.45 : x
  2. Step 2: Convert to fraction form
    85,998.20/128,997.30 = 41,711.45/x
  3. Step 3: Cross multiply
    85,998.20x = 128,997.30 × 41,711.45
  4. Step 4: Simplify right side
    85,998.20x = 5,380,664,429.09
  5. Step 5: Solve for x
    x = 5,380,664,429.09/85,998.20
  6. Step 6: Final answer
    x = 62,567.18

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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.