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Finding the Fourth Proportional to 79,190.82, 109,252.89 and 45,201.20

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Solution

The fourth proportional to 79,190.82, 109,252.89 and 45,201.20 is: 62,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,190.82 : 109,252.89 = 45,201.20 : x
  2. Step 2: Convert to fraction form
    79,190.82/109,252.89 = 45,201.20/x
  3. Step 3: Cross multiply
    79,190.82x = 109,252.89 × 45,201.20
  4. Step 4: Simplify right side
    79,190.82x = 4,938,361,185.20
  5. Step 5: Solve for x
    x = 4,938,361,185.20/79,190.82
  6. Step 6: Final answer
    x = 62,360.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.