Home / 85,450.05-128,163.78-22,274.78

Finding the Fourth Proportional to 85,450.05, 128,163.78 and 22,274.78

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Solution

The fourth proportional to 85,450.05, 128,163.78 and 22,274.78 is: 33,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,450.05 : 128,163.78 = 22,274.78 : x
  2. Step 2: Convert to fraction form
    85,450.05/128,163.78 = 22,274.78/x
  3. Step 3: Cross multiply
    85,450.05x = 128,163.78 × 22,274.78
  4. Step 4: Simplify right side
    85,450.05x = 2,854,819,362.65
  5. Step 5: Solve for x
    x = 2,854,819,362.65/85,450.05
  6. Step 6: Final answer
    x = 33,409.22

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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.