Home / 78,757,844.55-118,136,766.82-21,250,115.71

Finding the Fourth Proportional to 78,757,844.55, 118,136,766.82 and 21,250,115.71

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Solution

The fourth proportional to 78,757,844.55, 118,136,766.82 and 21,250,115.71 is: 31,875,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,757,844.55 : 118,136,766.82 = 21,250,115.71 : x
  2. Step 2: Convert to fraction form
    78,757,844.55/118,136,766.82 = 21,250,115.71/x
  3. Step 3: Cross multiply
    78,757,844.55x = 118,136,766.82 × 21,250,115.71
  4. Step 4: Simplify right side
    78,757,844.55x = 2,510,419,964,530,288.50
  5. Step 5: Solve for x
    x = 2,510,419,964,530,288.50/78,757,844.55
  6. Step 6: Final answer
    x = 31,875,173.56

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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.