Home / 63,121.32-87,138.98-39,255.68

Finding the Fourth Proportional to 63,121.32, 87,138.98 and 39,255.68

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Solution

The fourth proportional to 63,121.32, 87,138.98 and 39,255.68 is: 54,192.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,121.32 : 87,138.98 = 39,255.68 : x
  2. Step 2: Convert to fraction form
    63,121.32/87,138.98 = 39,255.68/x
  3. Step 3: Cross multiply
    63,121.32x = 87,138.98 × 39,255.68
  4. Step 4: Simplify right side
    63,121.32x = 3,420,699,696.56
  5. Step 5: Solve for x
    x = 3,420,699,696.56/63,121.32
  6. Step 6: Final answer
    x = 54,192.47

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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.