Home / 115,311.66-172,953.16-31,078.41

Finding the Fourth Proportional to 115,311.66, 172,953.16 and 31,078.41

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Solution

The fourth proportional to 115,311.66, 172,953.16 and 31,078.41 is: 46,613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,311.66 : 172,953.16 = 31,078.41 : x
  2. Step 2: Convert to fraction form
    115,311.66/172,953.16 = 31,078.41/x
  3. Step 3: Cross multiply
    115,311.66x = 172,953.16 × 31,078.41
  4. Step 4: Simplify right side
    115,311.66x = 5,375,109,217.28
  5. Step 5: Solve for x
    x = 5,375,109,217.28/115,311.66
  6. Step 6: Final answer
    x = 46,613.75

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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.