Home / 90,940.57-125,577.39-57,007.55

Finding the Fourth Proportional to 90,940.57, 125,577.39 and 57,007.55

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Solution

The fourth proportional to 90,940.57, 125,577.39 and 57,007.55 is: 78,720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,940.57 : 125,577.39 = 57,007.55 : x
  2. Step 2: Convert to fraction form
    90,940.57/125,577.39 = 57,007.55/x
  3. Step 3: Cross multiply
    90,940.57x = 125,577.39 × 57,007.55
  4. Step 4: Simplify right side
    90,940.57x = 7,158,858,839.98
  5. Step 5: Solve for x
    x = 7,158,858,839.98/90,940.57
  6. Step 6: Final answer
    x = 78,720.19

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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.