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Finding the Fourth Proportional to 64,989.14, 89,674.90 and 36,694.22

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Solution

The fourth proportional to 64,989.14, 89,674.90 and 36,694.22 is: 50,632.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,989.14 : 89,674.90 = 36,694.22 : x
  2. Step 2: Convert to fraction form
    64,989.14/89,674.90 = 36,694.22/x
  3. Step 3: Cross multiply
    64,989.14x = 89,674.90 × 36,694.22
  4. Step 4: Simplify right side
    64,989.14x = 3,290,549,968.97
  5. Step 5: Solve for x
    x = 3,290,549,968.97/64,989.14
  6. Step 6: Final answer
    x = 50,632.31

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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.