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Finding the Fourth Proportional to 69,984,603.60, 104,976,905.40 and 21,469,945.20

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Solution

The fourth proportional to 69,984,603.60, 104,976,905.40 and 21,469,945.20 is: 32,204,917.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,984,603.60 : 104,976,905.40 = 21,469,945.20 : x
  2. Step 2: Convert to fraction form
    69,984,603.60/104,976,905.40 = 21,469,945.20/x
  3. Step 3: Cross multiply
    69,984,603.60x = 104,976,905.40 × 21,469,945.20
  4. Step 4: Simplify right side
    69,984,603.60x = 2,253,848,406,203,584
  5. Step 5: Solve for x
    x = 2,253,848,406,203,584/69,984,603.60
  6. Step 6: Final answer
    x = 32,204,917.80

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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.