Home / 90,662.36-135,989.38-31,502.66

Finding the Fourth Proportional to 90,662.36, 135,989.38 and 31,502.66

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Solution

The fourth proportional to 90,662.36, 135,989.38 and 31,502.66 is: 47,252.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,662.36 : 135,989.38 = 31,502.66 : x
  2. Step 2: Convert to fraction form
    90,662.36/135,989.38 = 31,502.66/x
  3. Step 3: Cross multiply
    90,662.36x = 135,989.38 × 31,502.66
  4. Step 4: Simplify right side
    90,662.36x = 4,284,027,201.75
  5. Step 5: Solve for x
    x = 4,284,027,201.75/90,662.36
  6. Step 6: Final answer
    x = 47,252.54

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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.