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Finding the Fourth Proportional to 64,664.80, 89,237.10 and 36,370.69

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Solution

The fourth proportional to 64,664.80, 89,237.10 and 36,370.69 is: 50,191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,664.80 : 89,237.10 = 36,370.69 : x
  2. Step 2: Convert to fraction form
    64,664.80/89,237.10 = 36,370.69/x
  3. Step 3: Cross multiply
    64,664.80x = 89,237.10 × 36,370.69
  4. Step 4: Simplify right side
    64,664.80x = 3,245,614,900.60
  5. Step 5: Solve for x
    x = 3,245,614,900.60/64,664.80
  6. Step 6: Final answer
    x = 50,191.37

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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.