Home / 81,789.76-112,875.82-49,964.66

Finding the Fourth Proportional to 81,789.76, 112,875.82 and 49,964.66

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Solution

The fourth proportional to 81,789.76, 112,875.82 and 49,964.66 is: 68,954.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,789.76 : 112,875.82 = 49,964.66 : x
  2. Step 2: Convert to fraction form
    81,789.76/112,875.82 = 49,964.66/x
  3. Step 3: Cross multiply
    81,789.76x = 112,875.82 × 49,964.66
  4. Step 4: Simplify right side
    81,789.76x = 5,639,801,702.51
  5. Step 5: Solve for x
    x = 5,639,801,702.51/81,789.76
  6. Step 6: Final answer
    x = 68,954.86

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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.