Home / 81,716.76-112,782.50-68,083.18

Finding the Fourth Proportional to 81,716.76, 112,782.50 and 68,083.18

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Solution

The fourth proportional to 81,716.76, 112,782.50 and 68,083.18 is: 93,965.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,716.76 : 112,782.50 = 68,083.18 : x
  2. Step 2: Convert to fraction form
    81,716.76/112,782.50 = 68,083.18/x
  3. Step 3: Cross multiply
    81,716.76x = 112,782.50 × 68,083.18
  4. Step 4: Simplify right side
    81,716.76x = 7,678,591,248.35
  5. Step 5: Solve for x
    x = 7,678,591,248.35/81,716.76
  6. Step 6: Final answer
    x = 93,965.93

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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.