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Finding the Fourth Proportional to 69,063.38, 103,611.14 and 21,675.87

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Solution

The fourth proportional to 69,063.38, 103,611.14 and 21,675.87 is: 32,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,063.38 : 103,611.14 = 21,675.87 : x
  2. Step 2: Convert to fraction form
    69,063.38/103,611.14 = 21,675.87/x
  3. Step 3: Cross multiply
    69,063.38x = 103,611.14 × 21,675.87
  4. Step 4: Simplify right side
    69,063.38x = 2,245,861,492.81
  5. Step 5: Solve for x
    x = 2,245,861,492.81/69,063.38
  6. Step 6: Final answer
    x = 32,518.85

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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.