Home / 81,491,716.90-112,487,821.23-48,451,887.21

Finding the Fourth Proportional to 81,491,716.90, 112,487,821.23 and 48,451,887.21

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Solution

The fourth proportional to 81,491,716.90, 112,487,821.23 and 48,451,887.21 is: 66,880,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,491,716.90 : 112,487,821.23 = 48,451,887.21 : x
  2. Step 2: Convert to fraction form
    81,491,716.90/112,487,821.23 = 48,451,887.21/x
  3. Step 3: Cross multiply
    81,491,716.90x = 112,487,821.23 × 48,451,887.21
  4. Step 4: Simplify right side
    81,491,716.90x = 5,450,247,226,388,955
  5. Step 5: Solve for x
    x = 5,450,247,226,388,955/81,491,716.90
  6. Step 6: Final answer
    x = 66,880,996.42

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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.