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Finding the Fourth Proportional to 68,494.52, 102,741.53 and 18,574.49

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Solution

The fourth proportional to 68,494.52, 102,741.53 and 18,574.49 is: 27,861.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,494.52 : 102,741.53 = 18,574.49 : x
  2. Step 2: Convert to fraction form
    68,494.52/102,741.53 = 18,574.49/x
  3. Step 3: Cross multiply
    68,494.52x = 102,741.53 × 18,574.49
  4. Step 4: Simplify right side
    68,494.52x = 1,908,371,428.70
  5. Step 5: Solve for x
    x = 1,908,371,428.70/68,494.52
  6. Step 6: Final answer
    x = 27,861.67

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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.