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Finding the Fourth Proportional to 103,981,608.90, 143,499,103.47 and 57,571,861.86

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Solution

The fourth proportional to 103,981,608.90, 143,499,103.47 and 57,571,861.86 is: 79,451,651.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,981,608.90 : 143,499,103.47 = 57,571,861.86 : x
  2. Step 2: Convert to fraction form
    103,981,608.90/143,499,103.47 = 57,571,861.86/x
  3. Step 3: Cross multiply
    103,981,608.90x = 143,499,103.47 × 57,571,861.86
  4. Step 4: Simplify right side
    103,981,608.90x = 8,261,510,562,008,687
  5. Step 5: Solve for x
    x = 8,261,510,562,008,687/103,981,608.90
  6. Step 6: Final answer
    x = 79,451,651.59

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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.