Home / 81,723.75-112,752.86-49,876.71

Finding the Fourth Proportional to 81,723.75, 112,752.86 and 49,876.71

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Solution

The fourth proportional to 81,723.75, 112,752.86 and 49,876.71 is: 68,814.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,723.75 : 112,752.86 = 49,876.71 : x
  2. Step 2: Convert to fraction form
    81,723.75/112,752.86 = 49,876.71/x
  3. Step 3: Cross multiply
    81,723.75x = 112,752.86 × 49,876.71
  4. Step 4: Simplify right side
    81,723.75x = 5,623,741,450.51
  5. Step 5: Solve for x
    x = 5,623,741,450.51/81,723.75
  6. Step 6: Final answer
    x = 68,814.04

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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.