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Finding the Fourth Proportional to 72,042.96, 108,069.63 and 27,669.71

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Solution

The fourth proportional to 72,042.96, 108,069.63 and 27,669.71 is: 41,506.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,042.96 : 108,069.63 = 27,669.71 : x
  2. Step 2: Convert to fraction form
    72,042.96/108,069.63 = 27,669.71/x
  3. Step 3: Cross multiply
    72,042.96x = 108,069.63 × 27,669.71
  4. Step 4: Simplify right side
    72,042.96x = 2,990,255,592.08
  5. Step 5: Solve for x
    x = 2,990,255,592.08/72,042.96
  6. Step 6: Final answer
    x = 41,506.56

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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.