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Finding the Fourth Proportional to 45,894.71, 68,760.59 and 19,181.81

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Solution

The fourth proportional to 45,894.71, 68,760.59 and 19,181.81 is: 28,738.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,894.71 : 68,760.59 = 19,181.81 : x
  2. Step 2: Convert to fraction form
    45,894.71/68,760.59 = 19,181.81/x
  3. Step 3: Cross multiply
    45,894.71x = 68,760.59 × 19,181.81
  4. Step 4: Simplify right side
    45,894.71x = 1,318,952,743.27
  5. Step 5: Solve for x
    x = 1,318,952,743.27/45,894.71
  6. Step 6: Final answer
    x = 28,738.67

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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.