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Finding the Fourth Proportional to 72,704.76, 109,010.70 and 34,738.44

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Solution

The fourth proportional to 72,704.76, 109,010.70 and 34,738.44 is: 52,085.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,704.76 : 109,010.70 = 34,738.44 : x
  2. Step 2: Convert to fraction form
    72,704.76/109,010.70 = 34,738.44/x
  3. Step 3: Cross multiply
    72,704.76x = 109,010.70 × 34,738.44
  4. Step 4: Simplify right side
    72,704.76x = 3,786,861,661.31
  5. Step 5: Solve for x
    x = 3,786,861,661.31/72,704.76
  6. Step 6: Final answer
    x = 52,085.47

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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.