Home / 85,517.12-117,984.85-55,340.62

Finding the Fourth Proportional to 85,517.12, 117,984.85 and 55,340.62

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Solution

The fourth proportional to 85,517.12, 117,984.85 and 55,340.62 is: 76,351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,517.12 : 117,984.85 = 55,340.62 : x
  2. Step 2: Convert to fraction form
    85,517.12/117,984.85 = 55,340.62/x
  3. Step 3: Cross multiply
    85,517.12x = 117,984.85 × 55,340.62
  4. Step 4: Simplify right side
    85,517.12x = 6,529,354,627.58
  5. Step 5: Solve for x
    x = 6,529,354,627.58/85,517.12
  6. Step 6: Final answer
    x = 76,351.44

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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.