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Finding the Fourth Proportional to 80,263,984.80, 120,388,978.80 and 26,411,296.80

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Solution

The fourth proportional to 80,263,984.80, 120,388,978.80 and 26,411,296.80 is: 39,614,642.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,263,984.80 : 120,388,978.80 = 26,411,296.80 : x
  2. Step 2: Convert to fraction form
    80,263,984.80/120,388,978.80 = 26,411,296.80/x
  3. Step 3: Cross multiply
    80,263,984.80x = 120,388,978.80 × 26,411,296.80
  4. Step 4: Simplify right side
    80,263,984.80x = 3,179,629,050,535,708
  5. Step 5: Solve for x
    x = 3,179,629,050,535,708/80,263,984.80
  6. Step 6: Final answer
    x = 39,614,642.34

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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.