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Finding the Fourth Proportional to 139,809.33, 209,747.25 and 45,048.48

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Solution

The fourth proportional to 139,809.33, 209,747.25 and 45,048.48 is: 67,583.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,809.33 : 209,747.25 = 45,048.48 : x
  2. Step 2: Convert to fraction form
    139,809.33/209,747.25 = 45,048.48/x
  3. Step 3: Cross multiply
    139,809.33x = 209,747.25 × 45,048.48
  4. Step 4: Simplify right side
    139,809.33x = 9,448,794,796.68
  5. Step 5: Solve for x
    x = 9,448,794,796.68/139,809.33
  6. Step 6: Final answer
    x = 67,583.44

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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.