Home / 78,933.11-117,823.85-68,968.49

Finding the Fourth Proportional to 78,933.11, 117,823.85 and 68,968.49

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Solution

The fourth proportional to 78,933.11, 117,823.85 and 68,968.49 is: 102,949.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,933.11 : 117,823.85 = 68,968.49 : x
  2. Step 2: Convert to fraction form
    78,933.11/117,823.85 = 68,968.49/x
  3. Step 3: Cross multiply
    78,933.11x = 117,823.85 × 68,968.49
  4. Step 4: Simplify right side
    78,933.11x = 8,126,132,086.52
  5. Step 5: Solve for x
    x = 8,126,132,086.52/78,933.11
  6. Step 6: Final answer
    x = 102,949.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.