Home / 90,640.11-125,069.49-50,350.17

Finding the Fourth Proportional to 90,640.11, 125,069.49 and 50,350.17

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Solution

The fourth proportional to 90,640.11, 125,069.49 and 50,350.17 is: 69,475.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640.11 : 125,069.49 = 50,350.17 : x
  2. Step 2: Convert to fraction form
    90,640.11/125,069.49 = 50,350.17/x
  3. Step 3: Cross multiply
    90,640.11x = 125,069.49 × 50,350.17
  4. Step 4: Simplify right side
    90,640.11x = 6,297,270,083.31
  5. Step 5: Solve for x
    x = 6,297,270,083.31/90,640.11
  6. Step 6: Final answer
    x = 69,475.53

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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.