Home / 81,465,643.90-122,340,183.45-43,201,891.90

Finding the Fourth Proportional to 81,465,643.90, 122,340,183.45 and 43,201,891.90

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Solution

The fourth proportional to 81,465,643.90, 122,340,183.45 and 43,201,891.90 is: 64,877,991.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,643.90 : 122,340,183.45 = 43,201,891.90 : x
  2. Step 2: Convert to fraction form
    81,465,643.90/122,340,183.45 = 43,201,891.90/x
  3. Step 3: Cross multiply
    81,465,643.90x = 122,340,183.45 × 43,201,891.90
  4. Step 4: Simplify right side
    81,465,643.90x = 5,285,327,380,433,069
  5. Step 5: Solve for x
    x = 5,285,327,380,433,069/81,465,643.90
  6. Step 6: Final answer
    x = 64,877,991.84

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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.