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Finding the Fourth Proportional to 67,951.17, 101,886.51 and 20,551.89

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Solution

The fourth proportional to 67,951.17, 101,886.51 and 20,551.89 is: 30,815.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,951.17 : 101,886.51 = 20,551.89 : x
  2. Step 2: Convert to fraction form
    67,951.17/101,886.51 = 20,551.89/x
  3. Step 3: Cross multiply
    67,951.17x = 101,886.51 × 20,551.89
  4. Step 4: Simplify right side
    67,951.17x = 2,093,960,689.54
  5. Step 5: Solve for x
    x = 2,093,960,689.54/67,951.17
  6. Step 6: Final answer
    x = 30,815.67

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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.