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Finding the Fourth Proportional to 68,236,469.60, 102,410,691.60 and 65,996,981.60

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Solution

The fourth proportional to 68,236,469.60, 102,410,691.60 and 65,996,981.60 is: 99,049,622.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,236,469.60 : 102,410,691.60 = 65,996,981.60 : x
  2. Step 2: Convert to fraction form
    68,236,469.60/102,410,691.60 = 65,996,981.60/x
  3. Step 3: Cross multiply
    68,236,469.60x = 102,410,691.60 × 65,996,981.60
  4. Step 4: Simplify right side
    68,236,469.60x = 6,758,796,529,168,474
  5. Step 5: Solve for x
    x = 6,758,796,529,168,474/68,236,469.60
  6. Step 6: Final answer
    x = 99,049,622.13

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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.