Home / 81,828.75-112,900.38-49,109.87

Finding the Fourth Proportional to 81,828.75, 112,900.38 and 49,109.87

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Solution

The fourth proportional to 81,828.75, 112,900.38 and 49,109.87 is: 67,757.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,828.75 : 112,900.38 = 49,109.87 : x
  2. Step 2: Convert to fraction form
    81,828.75/112,900.38 = 49,109.87/x
  3. Step 3: Cross multiply
    81,828.75x = 112,900.38 × 49,109.87
  4. Step 4: Simplify right side
    81,828.75x = 5,544,522,420.25
  5. Step 5: Solve for x
    x = 5,544,522,420.25/81,828.75
  6. Step 6: Final answer
    x = 67,757.63

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1.5x scale

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.