Home / 91,366.12-137,063.94-28,171.44

Finding the Fourth Proportional to 91,366.12, 137,063.94 and 28,171.44

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Solution

The fourth proportional to 91,366.12, 137,063.94 and 28,171.44 is: 42,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,366.12 : 137,063.94 = 28,171.44 : x
  2. Step 2: Convert to fraction form
    91,366.12/137,063.94 = 28,171.44/x
  3. Step 3: Cross multiply
    91,366.12x = 137,063.94 × 28,171.44
  4. Step 4: Simplify right side
    91,366.12x = 3,861,288,561.87
  5. Step 5: Solve for x
    x = 3,861,288,561.87/91,366.12
  6. Step 6: Final answer
    x = 42,261.71

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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.