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Finding the Fourth Proportional to 57,550.50, 86,364.90 and 20,614.50

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Solution

The fourth proportional to 57,550.50, 86,364.90 and 20,614.50 is: 30,935.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,550.50 : 86,364.90 = 20,614.50 : x
  2. Step 2: Convert to fraction form
    57,550.50/86,364.90 = 20,614.50/x
  3. Step 3: Cross multiply
    57,550.50x = 86,364.90 × 20,614.50
  4. Step 4: Simplify right side
    57,550.50x = 1,780,369,231.05
  5. Step 5: Solve for x
    x = 1,780,369,231.05/57,550.50
  6. Step 6: Final answer
    x = 30,935.77

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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.