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Finding the Fourth Proportional to 64,786.04, 89,406.21 and 36,108.65

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Solution

The fourth proportional to 64,786.04, 89,406.21 and 36,108.65 is: 49,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,786.04 : 89,406.21 = 36,108.65 : x
  2. Step 2: Convert to fraction form
    64,786.04/89,406.21 = 36,108.65/x
  3. Step 3: Cross multiply
    64,786.04x = 89,406.21 × 36,108.65
  4. Step 4: Simplify right side
    64,786.04x = 3,228,337,903.64
  5. Step 5: Solve for x
    x = 3,228,337,903.64/64,786.04
  6. Step 6: Final answer
    x = 49,830.76

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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.