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Finding the Fourth Proportional to 68,822.33, 103,146.39 and 39,256.79

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Solution

The fourth proportional to 68,822.33, 103,146.39 and 39,256.79 is: 58,835.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,822.33 : 103,146.39 = 39,256.79 : x
  2. Step 2: Convert to fraction form
    68,822.33/103,146.39 = 39,256.79/x
  3. Step 3: Cross multiply
    68,822.33x = 103,146.39 × 39,256.79
  4. Step 4: Simplify right side
    68,822.33x = 4,049,195,655.76
  5. Step 5: Solve for x
    x = 4,049,195,655.76/68,822.33
  6. Step 6: Final answer
    x = 58,835.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.