Home / 90,640.43-125,028.38-53,821.70

Finding the Fourth Proportional to 90,640.43, 125,028.38 and 53,821.70

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Solution

The fourth proportional to 90,640.43, 125,028.38 and 53,821.70 is: 74,241.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640.43 : 125,028.38 = 53,821.70 : x
  2. Step 2: Convert to fraction form
    90,640.43/125,028.38 = 53,821.70/x
  3. Step 3: Cross multiply
    90,640.43x = 125,028.38 × 53,821.70
  4. Step 4: Simplify right side
    90,640.43x = 6,729,239,065.60
  5. Step 5: Solve for x
    x = 6,729,239,065.60/90,640.43
  6. Step 6: Final answer
    x = 74,241.03

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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.