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Finding the Fourth Proportional to 64,989.69, 89,684.46 and 36,694.77

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Solution

The fourth proportional to 64,989.69, 89,684.46 and 36,694.77 is: 50,638.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,989.69 : 89,684.46 = 36,694.77 : x
  2. Step 2: Convert to fraction form
    64,989.69/89,684.46 = 36,694.77/x
  3. Step 3: Cross multiply
    64,989.69x = 89,684.46 × 36,694.77
  4. Step 4: Simplify right side
    64,989.69x = 3,290,950,632.27
  5. Step 5: Solve for x
    x = 3,290,950,632.27/64,989.69
  6. Step 6: Final answer
    x = 50,638.04

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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.