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Finding the Fourth Proportional to 139,767.46, 209,586.62 and 44,980

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Solution

The fourth proportional to 139,767.46, 209,586.62 and 44,980 is: 67,449.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,767.46 : 209,586.62 = 44,980 : x
  2. Step 2: Convert to fraction form
    139,767.46/209,586.62 = 44,980/x
  3. Step 3: Cross multiply
    139,767.46x = 209,586.62 × 44,980
  4. Step 4: Simplify right side
    139,767.46x = 9,427,206,167.60
  5. Step 5: Solve for x
    x = 9,427,206,167.60/139,767.46
  6. Step 6: Final answer
    x = 67,449.22

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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.