Home / 57,939.30-86,910.57-20,494.08

Finding the Fourth Proportional to 57,939.30, 86,910.57 and 20,494.08

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Solution

The fourth proportional to 57,939.30, 86,910.57 and 20,494.08 is: 30,741.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,939.30 : 86,910.57 = 20,494.08 : x
  2. Step 2: Convert to fraction form
    57,939.30/86,910.57 = 20,494.08/x
  3. Step 3: Cross multiply
    57,939.30x = 86,910.57 × 20,494.08
  4. Step 4: Simplify right side
    57,939.30x = 1,781,152,174.43
  5. Step 5: Solve for x
    x = 1,781,152,174.43/57,939.30
  6. Step 6: Final answer
    x = 30,741.69

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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.