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Finding the Fourth Proportional to 72,628.56, 108,942.84 and 63,504.72

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Solution

The fourth proportional to 72,628.56, 108,942.84 and 63,504.72 is: 95,257.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,628.56 : 108,942.84 = 63,504.72 : x
  2. Step 2: Convert to fraction form
    72,628.56/108,942.84 = 63,504.72/x
  3. Step 3: Cross multiply
    72,628.56x = 108,942.84 × 63,504.72
  4. Step 4: Simplify right side
    72,628.56x = 6,918,384,550.20
  5. Step 5: Solve for x
    x = 6,918,384,550.20/72,628.56
  6. Step 6: Final answer
    x = 95,257.08

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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.