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Finding the Fourth Proportional to 91,611.45, 137,367.36 and 28,414.44

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Solution

The fourth proportional to 91,611.45, 137,367.36 and 28,414.44 is: 42,606.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,611.45 : 137,367.36 = 28,414.44 : x
  2. Step 2: Convert to fraction form
    91,611.45/137,367.36 = 28,414.44/x
  3. Step 3: Cross multiply
    91,611.45x = 137,367.36 × 28,414.44
  4. Step 4: Simplify right side
    91,611.45x = 3,903,216,608.68
  5. Step 5: Solve for x
    x = 3,903,216,608.68/91,611.45
  6. Step 6: Final answer
    x = 42,606.21

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1.5x scale

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.