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Finding the Fourth Proportional to 64,976.28, 89,671.50 and 36,682.68

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Solution

The fourth proportional to 64,976.28, 89,671.50 and 36,682.68 is: 50,624.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,976.28 : 89,671.50 = 36,682.68 : x
  2. Step 2: Convert to fraction form
    64,976.28/89,671.50 = 36,682.68/x
  3. Step 3: Cross multiply
    64,976.28x = 89,671.50 × 36,682.68
  4. Step 4: Simplify right side
    64,976.28x = 3,289,390,939.62
  5. Step 5: Solve for x
    x = 3,289,390,939.62/64,976.28
  6. Step 6: Final answer
    x = 50,624.49

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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.