Home / 78,279,279.62-108,022,446.32-43,474,212.06

Finding the Fourth Proportional to 78,279,279.62, 108,022,446.32 and 43,474,212.06

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Solution

The fourth proportional to 78,279,279.62, 108,022,446.32 and 43,474,212.06 is: 59,992,768.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,279,279.62 : 108,022,446.32 = 43,474,212.06 : x
  2. Step 2: Convert to fraction form
    78,279,279.62/108,022,446.32 = 43,474,212.06/x
  3. Step 3: Cross multiply
    78,279,279.62x = 108,022,446.32 × 43,474,212.06
  4. Step 4: Simplify right side
    78,279,279.62x = 4,696,190,738,555,647
  5. Step 5: Solve for x
    x = 4,696,190,738,555,647/78,279,279.62
  6. Step 6: Final answer
    x = 59,992,768.99

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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.