Home / 90,441.52-135,675.64-31,261.30

Finding the Fourth Proportional to 90,441.52, 135,675.64 and 31,261.30

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Solution

The fourth proportional to 90,441.52, 135,675.64 and 31,261.30 is: 46,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,441.52 : 135,675.64 = 31,261.30 : x
  2. Step 2: Convert to fraction form
    90,441.52/135,675.64 = 31,261.30/x
  3. Step 3: Cross multiply
    90,441.52x = 135,675.64 × 31,261.30
  4. Step 4: Simplify right side
    90,441.52x = 4,241,396,832.37
  5. Step 5: Solve for x
    x = 4,241,396,832.37/90,441.52
  6. Step 6: Final answer
    x = 46,896.57

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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.