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Finding the Fourth Proportional to 72,385.44, 108,601.44 and 34,450.80

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Solution

The fourth proportional to 72,385.44, 108,601.44 and 34,450.80 is: 51,687.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,385.44 : 108,601.44 = 34,450.80 : x
  2. Step 2: Convert to fraction form
    72,385.44/108,601.44 = 34,450.80/x
  3. Step 3: Cross multiply
    72,385.44x = 108,601.44 × 34,450.80
  4. Step 4: Simplify right side
    72,385.44x = 3,741,406,489.15
  5. Step 5: Solve for x
    x = 3,741,406,489.15/72,385.44
  6. Step 6: Final answer
    x = 51,687.28

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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.