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Finding the Fourth Proportional to 90,661.84, 135,915 and 35,227.60

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Solution

The fourth proportional to 90,661.84, 135,915 and 35,227.60 is: 52,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,661.84 : 135,915 = 35,227.60 : x
  2. Step 2: Convert to fraction form
    90,661.84/135,915 = 35,227.60/x
  3. Step 3: Cross multiply
    90,661.84x = 135,915 × 35,227.60
  4. Step 4: Simplify right side
    90,661.84x = 4,787,959,254
  5. Step 5: Solve for x
    x = 4,787,959,254/90,661.84
  6. Step 6: Final answer
    x = 52,811.19

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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.