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Finding the Fourth Proportional to 7,138,369.04, 9,849,910.20 and 4,081,992.80

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Solution

The fourth proportional to 7,138,369.04, 9,849,910.20 and 4,081,992.80 is: 5,632,555.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138,369.04 : 9,849,910.20 = 4,081,992.80 : x
  2. Step 2: Convert to fraction form
    7,138,369.04/9,849,910.20 = 4,081,992.80/x
  3. Step 3: Cross multiply
    7,138,369.04x = 9,849,910.20 × 4,081,992.80
  4. Step 4: Simplify right side
    7,138,369.04x = 40,207,262,517,046.55
  5. Step 5: Solve for x
    x = 40,207,262,517,046.55/7,138,369.04
  6. Step 6: Final answer
    x = 5,632,555.88

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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.