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Finding the Fourth Proportional to 72,899.57, 100,620.17 and 47,469.41

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Solution

The fourth proportional to 72,899.57, 100,620.17 and 47,469.41 is: 65,520.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,899.57 : 100,620.17 = 47,469.41 : x
  2. Step 2: Convert to fraction form
    72,899.57/100,620.17 = 47,469.41/x
  3. Step 3: Cross multiply
    72,899.57x = 100,620.17 × 47,469.41
  4. Step 4: Simplify right side
    72,899.57x = 4,776,379,363.55
  5. Step 5: Solve for x
    x = 4,776,379,363.55/72,899.57
  6. Step 6: Final answer
    x = 65,520.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.