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Finding the Fourth Proportional to 64,609.74, 89,162.46 and 36,315.42

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Solution

The fourth proportional to 64,609.74, 89,162.46 and 36,315.42 is: 50,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,609.74 : 89,162.46 = 36,315.42 : x
  2. Step 2: Convert to fraction form
    64,609.74/89,162.46 = 36,315.42/x
  3. Step 3: Cross multiply
    64,609.74x = 89,162.46 × 36,315.42
  4. Step 4: Simplify right side
    64,609.74x = 3,237,972,183.13
  5. Step 5: Solve for x
    x = 3,237,972,183.13/64,609.74
  6. Step 6: Final answer
    x = 50,115.85

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1.5x scale

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.