Home / 63,121.41-87,139.11-39,255.77

Finding the Fourth Proportional to 63,121.41, 87,139.11 and 39,255.77

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Solution

The fourth proportional to 63,121.41, 87,139.11 and 39,255.77 is: 54,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,121.41 : 87,139.11 = 39,255.77 : x
  2. Step 2: Convert to fraction form
    63,121.41/87,139.11 = 39,255.77/x
  3. Step 3: Cross multiply
    63,121.41x = 87,139.11 × 39,255.77
  4. Step 4: Simplify right side
    63,121.41x = 3,420,713,285.08
  5. Step 5: Solve for x
    x = 3,420,713,285.08/63,121.41
  6. Step 6: Final answer
    x = 54,192.60

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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.