Home / 85,209.25-117,589.17-49,420.48

Finding the Fourth Proportional to 85,209.25, 117,589.17 and 49,420.48

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Solution

The fourth proportional to 85,209.25, 117,589.17 and 49,420.48 is: 68,200.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,209.25 : 117,589.17 = 49,420.48 : x
  2. Step 2: Convert to fraction form
    85,209.25/117,589.17 = 49,420.48/x
  3. Step 3: Cross multiply
    85,209.25x = 117,589.17 × 49,420.48
  4. Step 4: Simplify right side
    85,209.25x = 5,811,313,224.20
  5. Step 5: Solve for x
    x = 5,811,313,224.20/85,209.25
  6. Step 6: Final answer
    x = 68,200.50

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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.