Home / 91,965.24-137,947.64-25,405.20

Finding the Fourth Proportional to 91,965.24, 137,947.64 and 25,405.20

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Solution

The fourth proportional to 91,965.24, 137,947.64 and 25,405.20 is: 38,107.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,965.24 : 137,947.64 = 25,405.20 : x
  2. Step 2: Convert to fraction form
    91,965.24/137,947.64 = 25,405.20/x
  3. Step 3: Cross multiply
    91,965.24x = 137,947.64 × 25,405.20
  4. Step 4: Simplify right side
    91,965.24x = 3,504,587,383.73
  5. Step 5: Solve for x
    x = 3,504,587,383.73/91,965.24
  6. Step 6: Final answer
    x = 38,107.74

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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.