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Finding the Fourth Proportional to 72,183.85, 108,253.90 and 21,586.23

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Solution

The fourth proportional to 72,183.85, 108,253.90 and 21,586.23 is: 32,372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,183.85 : 108,253.90 = 21,586.23 : x
  2. Step 2: Convert to fraction form
    72,183.85/108,253.90 = 21,586.23/x
  3. Step 3: Cross multiply
    72,183.85x = 108,253.90 × 21,586.23
  4. Step 4: Simplify right side
    72,183.85x = 2,336,793,583.80
  5. Step 5: Solve for x
    x = 2,336,793,583.80/72,183.85
  6. Step 6: Final answer
    x = 32,372.80

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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.