Home / 68,238.75-94,170.15-39,945.05

Finding the Fourth Proportional to 68,238.75, 94,170.15 and 39,945.05

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Solution

The fourth proportional to 68,238.75, 94,170.15 and 39,945.05 is: 55,124.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,238.75 : 94,170.15 = 39,945.05 : x
  2. Step 2: Convert to fraction form
    68,238.75/94,170.15 = 39,945.05/x
  3. Step 3: Cross multiply
    68,238.75x = 94,170.15 × 39,945.05
  4. Step 4: Simplify right side
    68,238.75x = 3,761,630,879.41
  5. Step 5: Solve for x
    x = 3,761,630,879.41/68,238.75
  6. Step 6: Final answer
    x = 55,124.56

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1.5x scale

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.