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Finding the Fourth Proportional to 69,944,672.40, 104,924,881.80 and 21,422,140.80

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Solution

The fourth proportional to 69,944,672.40, 104,924,881.80 and 21,422,140.80 is: 32,135,622.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,944,672.40 : 104,924,881.80 = 21,422,140.80 : x
  2. Step 2: Convert to fraction form
    69,944,672.40/104,924,881.80 = 21,422,140.80/x
  3. Step 3: Cross multiply
    69,944,672.40x = 104,924,881.80 × 21,422,140.80
  4. Step 4: Simplify right side
    69,944,672.40x = 2,247,715,591,342,957.50
  5. Step 5: Solve for x
    x = 2,247,715,591,342,957.50/69,944,672.40
  6. Step 6: Final answer
    x = 32,135,622.55

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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.