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Finding the Fourth Proportional to 64,212.65, 88,620.12 and 36,989.67

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Solution

The fourth proportional to 64,212.65, 88,620.12 and 36,989.67 is: 51,049.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,212.65 : 88,620.12 = 36,989.67 : x
  2. Step 2: Convert to fraction form
    64,212.65/88,620.12 = 36,989.67/x
  3. Step 3: Cross multiply
    64,212.65x = 88,620.12 × 36,989.67
  4. Step 4: Simplify right side
    64,212.65x = 3,278,028,994.16
  5. Step 5: Solve for x
    x = 3,278,028,994.16/64,212.65
  6. Step 6: Final answer
    x = 51,049.59

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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.