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Finding the Fourth Proportional to 72,105.11, 108,225.52 and 36,591.93

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Solution

The fourth proportional to 72,105.11, 108,225.52 and 36,591.93 is: 54,922.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,105.11 : 108,225.52 = 36,591.93 : x
  2. Step 2: Convert to fraction form
    72,105.11/108,225.52 = 36,591.93/x
  3. Step 3: Cross multiply
    72,105.11x = 108,225.52 × 36,591.93
  4. Step 4: Simplify right side
    72,105.11x = 3,960,180,256.19
  5. Step 5: Solve for x
    x = 3,960,180,256.19/72,105.11
  6. Step 6: Final answer
    x = 54,922.32

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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.