Home / 85,639.89-128,481.24-32,331.75

Finding the Fourth Proportional to 85,639.89, 128,481.24 and 32,331.75

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Solution

The fourth proportional to 85,639.89, 128,481.24 and 32,331.75 is: 48,505.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,639.89 : 128,481.24 = 32,331.75 : x
  2. Step 2: Convert to fraction form
    85,639.89/128,481.24 = 32,331.75/x
  3. Step 3: Cross multiply
    85,639.89x = 128,481.24 × 32,331.75
  4. Step 4: Simplify right side
    85,639.89x = 4,154,023,331.37
  5. Step 5: Solve for x
    x = 4,154,023,331.37/85,639.89
  6. Step 6: Final answer
    x = 48,505.71

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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.