Home / 85,185.60-117,555.84-49,382.88

Finding the Fourth Proportional to 85,185.60, 117,555.84 and 49,382.88

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Solution

The fourth proportional to 85,185.60, 117,555.84 and 49,382.88 is: 68,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,185.60 : 117,555.84 = 49,382.88 : x
  2. Step 2: Convert to fraction form
    85,185.60/117,555.84 = 49,382.88/x
  3. Step 3: Cross multiply
    85,185.60x = 117,555.84 × 49,382.88
  4. Step 4: Simplify right side
    85,185.60x = 5,805,245,940.02
  5. Step 5: Solve for x
    x = 5,805,245,940.02/85,185.60
  6. Step 6: Final answer
    x = 68,148.21

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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.