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Finding the Fourth Proportional to 104,645.80, 156,965.18 and 45,481.46

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Solution

The fourth proportional to 104,645.80, 156,965.18 and 45,481.46 is: 68,220.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,645.80 : 156,965.18 = 45,481.46 : x
  2. Step 2: Convert to fraction form
    104,645.80/156,965.18 = 45,481.46/x
  3. Step 3: Cross multiply
    104,645.80x = 156,965.18 × 45,481.46
  4. Step 4: Simplify right side
    104,645.80x = 7,139,005,555.56
  5. Step 5: Solve for x
    x = 7,139,005,555.56/104,645.80
  6. Step 6: Final answer
    x = 68,220.66

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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.