Home / 90,754.32-135,992.88-38,135.04

Finding the Fourth Proportional to 90,754.32, 135,992.88 and 38,135.04

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Solution

The fourth proportional to 90,754.32, 135,992.88 and 38,135.04 is: 57,144.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,754.32 : 135,992.88 = 38,135.04 : x
  2. Step 2: Convert to fraction form
    90,754.32/135,992.88 = 38,135.04/x
  3. Step 3: Cross multiply
    90,754.32x = 135,992.88 × 38,135.04
  4. Step 4: Simplify right side
    90,754.32x = 5,186,093,918.52
  5. Step 5: Solve for x
    x = 5,186,093,918.52/90,754.32
  6. Step 6: Final answer
    x = 57,144.32

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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.