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Finding the Fourth Proportional to 27,131,043.30, 40,696,564.95 and 18,521,699.10

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Solution

The fourth proportional to 27,131,043.30, 40,696,564.95 and 18,521,699.10 is: 27,782,548.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,131,043.30 : 40,696,564.95 = 18,521,699.10 : x
  2. Step 2: Convert to fraction form
    27,131,043.30/40,696,564.95 = 18,521,699.10/x
  3. Step 3: Cross multiply
    27,131,043.30x = 40,696,564.95 × 18,521,699.10
  4. Step 4: Simplify right side
    27,131,043.30x = 753,769,530,407,506.62
  5. Step 5: Solve for x
    x = 753,769,530,407,506.62/27,131,043.30
  6. Step 6: Final answer
    x = 27,782,548.65

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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.