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Finding the Fourth Proportional to 68,316, 102,491.28 and 19,068

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Solution

The fourth proportional to 68,316, 102,491.28 and 19,068 is: 28,606.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,316 : 102,491.28 = 19,068 : x
  2. Step 2: Convert to fraction form
    68,316/102,491.28 = 19,068/x
  3. Step 3: Cross multiply
    68,316x = 102,491.28 × 19,068
  4. Step 4: Simplify right side
    68,316x = 1,954,303,727.04
  5. Step 5: Solve for x
    x = 1,954,303,727.04/68,316
  6. Step 6: Final answer
    x = 28,606.82

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