Home / 90,027.66-135,035.01-39,431.82

Finding the Fourth Proportional to 90,027.66, 135,035.01 and 39,431.82

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Solution

The fourth proportional to 90,027.66, 135,035.01 and 39,431.82 is: 59,144.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,027.66 : 135,035.01 = 39,431.82 : x
  2. Step 2: Convert to fraction form
    90,027.66/135,035.01 = 39,431.82/x
  3. Step 3: Cross multiply
    90,027.66x = 135,035.01 × 39,431.82
  4. Step 4: Simplify right side
    90,027.66x = 5,324,676,208.02
  5. Step 5: Solve for x
    x = 5,324,676,208.02/90,027.66
  6. Step 6: Final answer
    x = 59,144.89

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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.