Home / 81,803.36-112,891.80-49,986.56

Finding the Fourth Proportional to 81,803.36, 112,891.80 and 49,986.56

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Solution

The fourth proportional to 81,803.36, 112,891.80 and 49,986.56 is: 68,983.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,803.36 : 112,891.80 = 49,986.56 : x
  2. Step 2: Convert to fraction form
    81,803.36/112,891.80 = 49,986.56/x
  3. Step 3: Cross multiply
    81,803.36x = 112,891.80 × 49,986.56
  4. Step 4: Simplify right side
    81,803.36x = 5,643,072,734.21
  5. Step 5: Solve for x
    x = 5,643,072,734.21/81,803.36
  6. Step 6: Final answer
    x = 68,983.39

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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.