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Finding the Fourth Proportional to 85,491.33, 128,226.06 and 35,562.12

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Solution

The fourth proportional to 85,491.33, 128,226.06 and 35,562.12 is: 53,338.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,491.33 : 128,226.06 = 35,562.12 : x
  2. Step 2: Convert to fraction form
    85,491.33/128,226.06 = 35,562.12/x
  3. Step 3: Cross multiply
    85,491.33x = 128,226.06 × 35,562.12
  4. Step 4: Simplify right side
    85,491.33x = 4,559,990,532.85
  5. Step 5: Solve for x
    x = 4,559,990,532.85/85,491.33
  6. Step 6: Final answer
    x = 53,338.63

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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.