Home / 90,039.26-135,055.94-26,859.89

Finding the Fourth Proportional to 90,039.26, 135,055.94 and 26,859.89

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Solution

The fourth proportional to 90,039.26, 135,055.94 and 26,859.89 is: 40,288.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,039.26 : 135,055.94 = 26,859.89 : x
  2. Step 2: Convert to fraction form
    90,039.26/135,055.94 = 26,859.89/x
  3. Step 3: Cross multiply
    90,039.26x = 135,055.94 × 26,859.89
  4. Step 4: Simplify right side
    90,039.26x = 3,627,586,882.67
  5. Step 5: Solve for x
    x = 3,627,586,882.67/90,039.26
  6. Step 6: Final answer
    x = 40,288.95

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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.