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Finding the Fourth Proportional to 20,366,978.20, 30,550,467.30 and 5,991,499.15

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Solution

The fourth proportional to 20,366,978.20, 30,550,467.30 and 5,991,499.15 is: 8,987,248.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366,978.20 : 30,550,467.30 = 5,991,499.15 : x
  2. Step 2: Convert to fraction form
    20,366,978.20/30,550,467.30 = 5,991,499.15/x
  3. Step 3: Cross multiply
    20,366,978.20x = 30,550,467.30 × 5,991,499.15
  4. Step 4: Simplify right side
    20,366,978.20x = 183,043,098,860,052.81
  5. Step 5: Solve for x
    x = 183,043,098,860,052.81/20,366,978.20
  6. Step 6: Final answer
    x = 8,987,248.73

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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.