Home / 85,633.92-128,396.07-41,172.12

Finding the Fourth Proportional to 85,633.92, 128,396.07 and 41,172.12

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Solution

The fourth proportional to 85,633.92, 128,396.07 and 41,172.12 is: 61,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,633.92 : 128,396.07 = 41,172.12 : x
  2. Step 2: Convert to fraction form
    85,633.92/128,396.07 = 41,172.12/x
  3. Step 3: Cross multiply
    85,633.92x = 128,396.07 × 41,172.12
  4. Step 4: Simplify right side
    85,633.92x = 5,286,338,401.57
  5. Step 5: Solve for x
    x = 5,286,338,401.57/85,633.92
  6. Step 6: Final answer
    x = 61,731.83

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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.