Home / 63,121.44-87,139.15-39,255.80

Finding the Fourth Proportional to 63,121.44, 87,139.15 and 39,255.80

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Solution

The fourth proportional to 63,121.44, 87,139.15 and 39,255.80 is: 54,192.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,121.44 : 87,139.15 = 39,255.80 : x
  2. Step 2: Convert to fraction form
    63,121.44/87,139.15 = 39,255.80/x
  3. Step 3: Cross multiply
    63,121.44x = 87,139.15 × 39,255.80
  4. Step 4: Simplify right side
    63,121.44x = 3,420,717,360.56
  5. Step 5: Solve for x
    x = 3,420,717,360.56/63,121.44
  6. Step 6: Final answer
    x = 54,192.64

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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.