Home / 57,939.80-86,911.32-20,494.58

Finding the Fourth Proportional to 57,939.80, 86,911.32 and 20,494.58

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Solution

The fourth proportional to 57,939.80, 86,911.32 and 20,494.58 is: 30,742.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,939.80 : 86,911.32 = 20,494.58 : x
  2. Step 2: Convert to fraction form
    57,939.80/86,911.32 = 20,494.58/x
  3. Step 3: Cross multiply
    57,939.80x = 86,911.32 × 20,494.58
  4. Step 4: Simplify right side
    57,939.80x = 1,781,211,000.65
  5. Step 5: Solve for x
    x = 1,781,211,000.65/57,939.80
  6. Step 6: Final answer
    x = 30,742.44

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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.