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Finding the Fourth Proportional to 70,857,273.60, 106,285,910.40 and 19,747,180.80

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Solution

The fourth proportional to 70,857,273.60, 106,285,910.40 and 19,747,180.80 is: 29,620,771.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,857,273.60 : 106,285,910.40 = 19,747,180.80 : x
  2. Step 2: Convert to fraction form
    70,857,273.60/106,285,910.40 = 19,747,180.80/x
  3. Step 3: Cross multiply
    70,857,273.60x = 106,285,910.40 × 19,747,180.80
  4. Step 4: Simplify right side
    70,857,273.60x = 2,098,847,089,161,400.50
  5. Step 5: Solve for x
    x = 2,098,847,089,161,400.50/70,857,273.60
  6. Step 6: Final answer
    x = 29,620,771.20

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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.