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Finding the Fourth Proportional to 84,635.63, 126,965.75 and 45,171.22

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Solution

The fourth proportional to 84,635.63, 126,965.75 and 45,171.22 is: 67,763.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,635.63 : 126,965.75 = 45,171.22 : x
  2. Step 2: Convert to fraction form
    84,635.63/126,965.75 = 45,171.22/x
  3. Step 3: Cross multiply
    84,635.63x = 126,965.75 × 45,171.22
  4. Step 4: Simplify right side
    84,635.63x = 5,735,197,190.89
  5. Step 5: Solve for x
    x = 5,735,197,190.89/84,635.63
  6. Step 6: Final answer
    x = 67,763.39

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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.