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Finding the Fourth Proportional to 64,684.90, 89,262.84 and 36,003.61

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Solution

The fourth proportional to 64,684.90, 89,262.84 and 36,003.61 is: 49,683.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,684.90 : 89,262.84 = 36,003.61 : x
  2. Step 2: Convert to fraction form
    64,684.90/89,262.84 = 36,003.61/x
  3. Step 3: Cross multiply
    64,684.90x = 89,262.84 × 36,003.61
  4. Step 4: Simplify right side
    64,684.90x = 3,213,784,478.85
  5. Step 5: Solve for x
    x = 3,213,784,478.85/64,684.90
  6. Step 6: Final answer
    x = 49,683.69

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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.