Home / 81,941.88-113,053.39-49,689.44

Finding the Fourth Proportional to 81,941.88, 113,053.39 and 49,689.44

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Solution

The fourth proportional to 81,941.88, 113,053.39 and 49,689.44 is: 68,555.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,941.88 : 113,053.39 = 49,689.44 : x
  2. Step 2: Convert to fraction form
    81,941.88/113,053.39 = 49,689.44/x
  3. Step 3: Cross multiply
    81,941.88x = 113,053.39 × 49,689.44
  4. Step 4: Simplify right side
    81,941.88x = 5,617,559,639.20
  5. Step 5: Solve for x
    x = 5,617,559,639.20/81,941.88
  6. Step 6: Final answer
    x = 68,555.42

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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.