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Finding the Fourth Proportional to 69,162.60, 103,743.90 and 66,246.60

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Solution

The fourth proportional to 69,162.60, 103,743.90 and 66,246.60 is: 99,369.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,162.60 : 103,743.90 = 66,246.60 : x
  2. Step 2: Convert to fraction form
    69,162.60/103,743.90 = 66,246.60/x
  3. Step 3: Cross multiply
    69,162.60x = 103,743.90 × 66,246.60
  4. Step 4: Simplify right side
    69,162.60x = 6,872,680,645.74
  5. Step 5: Solve for x
    x = 6,872,680,645.74/69,162.60
  6. Step 6: Final answer
    x = 99,369.90

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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.