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Finding the Fourth Proportional to 64,831, 89,474.70 and 36,541.84

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Solution

The fourth proportional to 64,831, 89,474.70 and 36,541.84 is: 50,432.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,831 : 89,474.70 = 36,541.84 : x
  2. Step 2: Convert to fraction form
    64,831/89,474.70 = 36,541.84/x
  3. Step 3: Cross multiply
    64,831x = 89,474.70 × 36,541.84
  4. Step 4: Simplify right side
    64,831x = 3,269,570,171.45
  5. Step 5: Solve for x
    x = 3,269,570,171.45/64,831
  6. Step 6: Final answer
    x = 50,432.20

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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.