Home / 63,121.11-87,138.71-39,255.48

Finding the Fourth Proportional to 63,121.11, 87,138.71 and 39,255.48

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Solution

The fourth proportional to 63,121.11, 87,138.71 and 39,255.48 is: 54,192.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,121.11 : 87,138.71 = 39,255.48 : x
  2. Step 2: Convert to fraction form
    63,121.11/87,138.71 = 39,255.48/x
  3. Step 3: Cross multiply
    63,121.11x = 87,138.71 × 39,255.48
  4. Step 4: Simplify right side
    63,121.11x = 3,420,671,691.35
  5. Step 5: Solve for x
    x = 3,420,671,691.35/63,121.11
  6. Step 6: Final answer
    x = 54,192.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.