Home / 85,350.80-117,760.47-55,137.39

Finding the Fourth Proportional to 85,350.80, 117,760.47 and 55,137.39

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Solution

The fourth proportional to 85,350.80, 117,760.47 and 55,137.39 is: 76,074.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,350.80 : 117,760.47 = 55,137.39 : x
  2. Step 2: Convert to fraction form
    85,350.80/117,760.47 = 55,137.39/x
  3. Step 3: Cross multiply
    85,350.80x = 117,760.47 × 55,137.39
  4. Step 4: Simplify right side
    85,350.80x = 6,493,004,960.97
  5. Step 5: Solve for x
    x = 6,493,004,960.97/85,350.80
  6. Step 6: Final answer
    x = 76,074.33

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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.