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Finding the Fourth Proportional to 64,672.43, 89,247.62 and 36,378.32

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Solution

The fourth proportional to 64,672.43, 89,247.62 and 36,378.32 is: 50,201.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,672.43 : 89,247.62 = 36,378.32 : x
  2. Step 2: Convert to fraction form
    64,672.43/89,247.62 = 36,378.32/x
  3. Step 3: Cross multiply
    64,672.43x = 89,247.62 × 36,378.32
  4. Step 4: Simplify right side
    64,672.43x = 3,246,678,124.31
  5. Step 5: Solve for x
    x = 3,246,678,124.31/64,672.43
  6. Step 6: Final answer
    x = 50,201.89

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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.