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Finding the Fourth Proportional to 79,487,997.60, 119,231,996.40 and 25,640,752.80

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Solution

The fourth proportional to 79,487,997.60, 119,231,996.40 and 25,640,752.80 is: 38,461,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,487,997.60 : 119,231,996.40 = 25,640,752.80 : x
  2. Step 2: Convert to fraction form
    79,487,997.60/119,231,996.40 = 25,640,752.80/x
  3. Step 3: Cross multiply
    79,487,997.60x = 119,231,996.40 × 25,640,752.80
  4. Step 4: Simplify right side
    79,487,997.60x = 3,057,198,145,542,890
  5. Step 5: Solve for x
    x = 3,057,198,145,542,890/79,487,997.60
  6. Step 6: Final answer
    x = 38,461,129.20

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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.