Home / 90,381.14-135,481.46-31,179.04

Finding the Fourth Proportional to 90,381.14, 135,481.46 and 31,179.04

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Solution

The fourth proportional to 90,381.14, 135,481.46 and 31,179.04 is: 46,737.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,381.14 : 135,481.46 = 31,179.04 : x
  2. Step 2: Convert to fraction form
    90,381.14/135,481.46 = 31,179.04/x
  3. Step 3: Cross multiply
    90,381.14x = 135,481.46 × 31,179.04
  4. Step 4: Simplify right side
    90,381.14x = 4,224,181,860.60
  5. Step 5: Solve for x
    x = 4,224,181,860.60/90,381.14
  6. Step 6: Final answer
    x = 46,737.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.