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Finding the Fourth Proportional to 27,290,166.20, 40,810,914.21 and 20,378,499.20

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Solution

The fourth proportional to 27,290,166.20, 40,810,914.21 and 20,378,499.20 is: 30,474,903.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,290,166.20 : 40,810,914.21 = 20,378,499.20 : x
  2. Step 2: Convert to fraction form
    27,290,166.20/40,810,914.21 = 20,378,499.20/x
  3. Step 3: Cross multiply
    27,290,166.20x = 40,810,914.21 × 20,378,499.20
  4. Step 4: Simplify right side
    27,290,166.20x = 831,665,182,579,753.62
  5. Step 5: Solve for x
    x = 831,665,182,579,753.62/27,290,166.20
  6. Step 6: Final answer
    x = 30,474,903.54

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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.