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Finding the Fourth Proportional to 91,786.87, 137,622.93 and 38,464.44

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Solution

The fourth proportional to 91,786.87, 137,622.93 and 38,464.44 is: 57,672.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,786.87 : 137,622.93 = 38,464.44 : x
  2. Step 2: Convert to fraction form
    91,786.87/137,622.93 = 38,464.44/x
  3. Step 3: Cross multiply
    91,786.87x = 137,622.93 × 38,464.44
  4. Step 4: Simplify right side
    91,786.87x = 5,293,588,933.61
  5. Step 5: Solve for x
    x = 5,293,588,933.61/91,786.87
  6. Step 6: Final answer
    x = 57,672.62

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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.