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Finding the Fourth Proportional to 68,367, 102,551.22 and 19,119

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Solution

The fourth proportional to 68,367, 102,551.22 and 19,119 is: 28,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,367 : 102,551.22 = 19,119 : x
  2. Step 2: Convert to fraction form
    68,367/102,551.22 = 19,119/x
  3. Step 3: Cross multiply
    68,367x = 102,551.22 × 19,119
  4. Step 4: Simplify right side
    68,367x = 1,960,676,775.18
  5. Step 5: Solve for x
    x = 1,960,676,775.18/68,367
  6. Step 6: Final answer
    x = 28,678.70

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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.