Home / 81,734.90-112,803.09-49,903.70

Finding the Fourth Proportional to 81,734.90, 112,803.09 and 49,903.70

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Solution

The fourth proportional to 81,734.90, 112,803.09 and 49,903.70 is: 68,872.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,734.90 : 112,803.09 = 49,903.70 : x
  2. Step 2: Convert to fraction form
    81,734.90/112,803.09 = 49,903.70/x
  3. Step 3: Cross multiply
    81,734.90x = 112,803.09 × 49,903.70
  4. Step 4: Simplify right side
    81,734.90x = 5,629,291,562.43
  5. Step 5: Solve for x
    x = 5,629,291,562.43/81,734.90
  6. Step 6: Final answer
    x = 68,872.56

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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.