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Finding the Fourth Proportional to 21,991,035.04, 32,978,649.12 and 7,610,198.56

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Solution

The fourth proportional to 21,991,035.04, 32,978,649.12 and 7,610,198.56 is: 11,412,562.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991,035.04 : 32,978,649.12 = 7,610,198.56 : x
  2. Step 2: Convert to fraction form
    21,991,035.04/32,978,649.12 = 7,610,198.56/x
  3. Step 3: Cross multiply
    21,991,035.04x = 32,978,649.12 × 7,610,198.56
  4. Step 4: Simplify right side
    21,991,035.04x = 250,974,068,043,769.25
  5. Step 5: Solve for x
    x = 250,974,068,043,769.25/21,991,035.04
  6. Step 6: Final answer
    x = 11,412,562.78

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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.