Home / 90,411.75-135,626.64-33,500.91

Finding the Fourth Proportional to 90,411.75, 135,626.64 and 33,500.91

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Solution

The fourth proportional to 90,411.75, 135,626.64 and 33,500.91 is: 50,254.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,411.75 : 135,626.64 = 33,500.91 : x
  2. Step 2: Convert to fraction form
    90,411.75/135,626.64 = 33,500.91/x
  3. Step 3: Cross multiply
    90,411.75x = 135,626.64 × 33,500.91
  4. Step 4: Simplify right side
    90,411.75x = 4,543,615,860.24
  5. Step 5: Solve for x
    x = 4,543,615,860.24/90,411.75
  6. Step 6: Final answer
    x = 50,254.71

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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.