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Finding the Fourth Proportional to 53,900.70, 80,847.27 and 20,160.30

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Solution

The fourth proportional to 53,900.70, 80,847.27 and 20,160.30 is: 30,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,900.70 : 80,847.27 = 20,160.30 : x
  2. Step 2: Convert to fraction form
    53,900.70/80,847.27 = 20,160.30/x
  3. Step 3: Cross multiply
    53,900.70x = 80,847.27 × 20,160.30
  4. Step 4: Simplify right side
    53,900.70x = 1,629,905,217.38
  5. Step 5: Solve for x
    x = 1,629,905,217.38/53,900.70
  6. Step 6: Final answer
    x = 30,239.04

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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.