Home / 78,247,117,481.20-117,377,437,249.09-21,586,980,491.20

Finding the Fourth Proportional to 78,247,117,481.20, 117,377,437,249.09 and 21,586,980,491.20

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Solution

The fourth proportional to 78,247,117,481.20, 117,377,437,249.09 and 21,586,980,491.20 is: 32,382,335,983.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,247,117,481.20 : 117,377,437,249.09 = 21,586,980,491.20 : x
  2. Step 2: Convert to fraction form
    78,247,117,481.20/117,377,437,249.09 = 21,586,980,491.20/x
  3. Step 3: Cross multiply
    78,247,117,481.20x = 117,377,437,249.09 × 21,586,980,491.20
  4. Step 4: Simplify right side
    78,247,117,481.20x = 2,533,824,448,002,570,846,208
  5. Step 5: Solve for x
    x = 2,533,824,448,002,570,846,208/78,247,117,481.20
  6. Step 6: Final answer
    x = 32,382,335,983.32

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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.