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Finding the Fourth Proportional to 64,764.70, 89,373.54 and 36,469.78

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Solution

The fourth proportional to 64,764.70, 89,373.54 and 36,469.78 is: 50,327.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,764.70 : 89,373.54 = 36,469.78 : x
  2. Step 2: Convert to fraction form
    64,764.70/89,373.54 = 36,469.78/x
  3. Step 3: Cross multiply
    64,764.70x = 89,373.54 × 36,469.78
  4. Step 4: Simplify right side
    64,764.70x = 3,259,433,341.62
  5. Step 5: Solve for x
    x = 3,259,433,341.62/64,764.70
  6. Step 6: Final answer
    x = 50,327.31

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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.