Home / 52,107.45-78,161.17-12,664.59

Finding the Fourth Proportional to 52,107.45, 78,161.17 and 12,664.59

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Solution

The fourth proportional to 52,107.45, 78,161.17 and 12,664.59 is: 18,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,107.45 : 78,161.17 = 12,664.59 : x
  2. Step 2: Convert to fraction form
    52,107.45/78,161.17 = 12,664.59/x
  3. Step 3: Cross multiply
    52,107.45x = 78,161.17 × 12,664.59
  4. Step 4: Simplify right side
    52,107.45x = 989,879,171.97
  5. Step 5: Solve for x
    x = 989,879,171.97/52,107.45
  6. Step 6: Final answer
    x = 18,996.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.