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Finding the Fourth Proportional to 68,274.72, 102,427.20 and 28,865.52

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Solution

The fourth proportional to 68,274.72, 102,427.20 and 28,865.52 is: 43,304.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,274.72 : 102,427.20 = 28,865.52 : x
  2. Step 2: Convert to fraction form
    68,274.72/102,427.20 = 28,865.52/x
  3. Step 3: Cross multiply
    68,274.72x = 102,427.20 × 28,865.52
  4. Step 4: Simplify right side
    68,274.72x = 2,956,614,390.14
  5. Step 5: Solve for x
    x = 2,956,614,390.14/68,274.72
  6. Step 6: Final answer
    x = 43,304.67

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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.