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Finding the Fourth Proportional to 85,586.67, 128,379.90 and 32,959.25

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Solution

The fourth proportional to 85,586.67, 128,379.90 and 32,959.25 is: 49,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,586.67 : 128,379.90 = 32,959.25 : x
  2. Step 2: Convert to fraction form
    85,586.67/128,379.90 = 32,959.25/x
  3. Step 3: Cross multiply
    85,586.67x = 128,379.90 × 32,959.25
  4. Step 4: Simplify right side
    85,586.67x = 4,231,305,219.08
  5. Step 5: Solve for x
    x = 4,231,305,219.08/85,586.67
  6. Step 6: Final answer
    x = 49,438.83

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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.