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Finding the Fourth Proportional to 8,345,105.60, 12,489,664.80 and 8,345,105.60

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Solution

The fourth proportional to 8,345,105.60, 12,489,664.80 and 8,345,105.60 is: 12,489,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345,105.60 : 12,489,664.80 = 8,345,105.60 : x
  2. Step 2: Convert to fraction form
    8,345,105.60/12,489,664.80 = 8,345,105.60/x
  3. Step 3: Cross multiply
    8,345,105.60x = 12,489,664.80 × 8,345,105.60
  4. Step 4: Simplify right side
    8,345,105.60x = 104,227,571,664,602.88
  5. Step 5: Solve for x
    x = 104,227,571,664,602.88/8,345,105.60
  6. Step 6: Final answer
    x = 12,489,664.80

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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.