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Finding the Fourth Proportional to 64,669.90, 89,245.20 and 36,375.34

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Solution

The fourth proportional to 64,669.90, 89,245.20 and 36,375.34 is: 50,198.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,669.90 : 89,245.20 = 36,375.34 : x
  2. Step 2: Convert to fraction form
    64,669.90/89,245.20 = 36,375.34/x
  3. Step 3: Cross multiply
    64,669.90x = 89,245.20 × 36,375.34
  4. Step 4: Simplify right side
    64,669.90x = 3,246,324,493.37
  5. Step 5: Solve for x
    x = 3,246,324,493.37/64,669.90
  6. Step 6: Final answer
    x = 50,198.38

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1.5x scale

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.