Home / 90,640.25-135,963.05-43,260.33

Finding the Fourth Proportional to 90,640.25, 135,963.05 and 43,260.33

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Solution

The fourth proportional to 90,640.25, 135,963.05 and 43,260.33 is: 64,891.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,640.25 : 135,963.05 = 43,260.33 : x
  2. Step 2: Convert to fraction form
    90,640.25/135,963.05 = 43,260.33/x
  3. Step 3: Cross multiply
    90,640.25x = 135,963.05 × 43,260.33
  4. Step 4: Simplify right side
    90,640.25x = 5,881,806,410.81
  5. Step 5: Solve for x
    x = 5,881,806,410.81/90,640.25
  6. Step 6: Final answer
    x = 64,891.77

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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.