Home / 90,255.76-135,439.64-43,513.36

Finding the Fourth Proportional to 90,255.76, 135,439.64 and 43,513.36

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Solution

The fourth proportional to 90,255.76, 135,439.64 and 43,513.36 is: 65,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,255.76 : 135,439.64 = 43,513.36 : x
  2. Step 2: Convert to fraction form
    90,255.76/135,439.64 = 43,513.36/x
  3. Step 3: Cross multiply
    90,255.76x = 135,439.64 × 43,513.36
  4. Step 4: Simplify right side
    90,255.76x = 5,893,433,813.59
  5. Step 5: Solve for x
    x = 5,893,433,813.59/90,255.76
  6. Step 6: Final answer
    x = 65,297.04

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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.