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Finding the Fourth Proportional to 72,658.60, 109,074.30 and 41,093.80

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Solution

The fourth proportional to 72,658.60, 109,074.30 and 41,093.80 is: 61,689.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,658.60 : 109,074.30 = 41,093.80 : x
  2. Step 2: Convert to fraction form
    72,658.60/109,074.30 = 41,093.80/x
  3. Step 3: Cross multiply
    72,658.60x = 109,074.30 × 41,093.80
  4. Step 4: Simplify right side
    72,658.60x = 4,482,277,469.34
  5. Step 5: Solve for x
    x = 4,482,277,469.34/72,658.60
  6. Step 6: Final answer
    x = 61,689.57

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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.