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Finding the Fourth Proportional to 90,401.33, 135,448.90 and 54,754.94

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Solution

The fourth proportional to 90,401.33, 135,448.90 and 54,754.94 is: 82,039.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,401.33 : 135,448.90 = 54,754.94 : x
  2. Step 2: Convert to fraction form
    90,401.33/135,448.90 = 54,754.94/x
  3. Step 3: Cross multiply
    90,401.33x = 135,448.90 × 54,754.94
  4. Step 4: Simplify right side
    90,401.33x = 7,416,496,392.57
  5. Step 5: Solve for x
    x = 7,416,496,392.57/90,401.33
  6. Step 6: Final answer
    x = 82,039.68

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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.