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Finding the Fourth Proportional to 68,885.74, 103,329.14 and 18,968.58

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Solution

The fourth proportional to 68,885.74, 103,329.14 and 18,968.58 is: 28,453.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,885.74 : 103,329.14 = 18,968.58 : x
  2. Step 2: Convert to fraction form
    68,885.74/103,329.14 = 18,968.58/x
  3. Step 3: Cross multiply
    68,885.74x = 103,329.14 × 18,968.58
  4. Step 4: Simplify right side
    68,885.74x = 1,960,006,963.58
  5. Step 5: Solve for x
    x = 1,960,006,963.58/68,885.74
  6. Step 6: Final answer
    x = 28,453.01

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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.