Home / 90,450.48-135,696.39-31,286.10

Finding the Fourth Proportional to 90,450.48, 135,696.39 and 31,286.10

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Solution

The fourth proportional to 90,450.48, 135,696.39 and 31,286.10 is: 46,936.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,450.48 : 135,696.39 = 31,286.10 : x
  2. Step 2: Convert to fraction form
    90,450.48/135,696.39 = 31,286.10/x
  3. Step 3: Cross multiply
    90,450.48x = 135,696.39 × 31,286.10
  4. Step 4: Simplify right side
    90,450.48x = 4,245,410,827.18
  5. Step 5: Solve for x
    x = 4,245,410,827.18/90,450.48
  6. Step 6: Final answer
    x = 46,936.30

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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.