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Finding the Fourth Proportional to 139,640.71, 209,414.06 and 44,847.62

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Solution

The fourth proportional to 139,640.71, 209,414.06 and 44,847.62 is: 67,256.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,640.71 : 209,414.06 = 44,847.62 : x
  2. Step 2: Convert to fraction form
    139,640.71/209,414.06 = 44,847.62/x
  3. Step 3: Cross multiply
    139,640.71x = 209,414.06 × 44,847.62
  4. Step 4: Simplify right side
    139,640.71x = 9,391,723,045.66
  5. Step 5: Solve for x
    x = 9,391,723,045.66/139,640.71
  6. Step 6: Final answer
    x = 67,256.34

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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.