Home / 78,468,152.78-108,285,949.38-48,687,724.64

Finding the Fourth Proportional to 78,468,152.78, 108,285,949.38 and 48,687,724.64

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Solution

The fourth proportional to 78,468,152.78, 108,285,949.38 and 48,687,724.64 is: 67,188,997.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,468,152.78 : 108,285,949.38 = 48,687,724.64 : x
  2. Step 2: Convert to fraction form
    78,468,152.78/108,285,949.38 = 48,687,724.64/x
  3. Step 3: Cross multiply
    78,468,152.78x = 108,285,949.38 × 48,687,724.64
  4. Step 4: Simplify right side
    78,468,152.78x = 5,272,196,485,794,419
  5. Step 5: Solve for x
    x = 5,272,196,485,794,419/78,468,152.78
  6. Step 6: Final answer
    x = 67,188,997.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.