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Finding the Fourth Proportional to 72,100.60, 108,163.35 and 32,133.78

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Solution

The fourth proportional to 72,100.60, 108,163.35 and 32,133.78 is: 48,206.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,100.60 : 108,163.35 = 32,133.78 : x
  2. Step 2: Convert to fraction form
    72,100.60/108,163.35 = 32,133.78/x
  3. Step 3: Cross multiply
    72,100.60x = 108,163.35 × 32,133.78
  4. Step 4: Simplify right side
    72,100.60x = 3,475,696,942.22
  5. Step 5: Solve for x
    x = 3,475,696,942.22/72,100.60
  6. Step 6: Final answer
    x = 48,206.22

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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.