Home / 52,105.62-78,137.64-18,814.08

Finding the Fourth Proportional to 52,105.62, 78,137.64 and 18,814.08

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Solution

The fourth proportional to 52,105.62, 78,137.64 and 18,814.08 is: 28,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,105.62 : 78,137.64 = 18,814.08 : x
  2. Step 2: Convert to fraction form
    52,105.62/78,137.64 = 18,814.08/x
  3. Step 3: Cross multiply
    52,105.62x = 78,137.64 × 18,814.08
  4. Step 4: Simplify right side
    52,105.62x = 1,470,087,809.97
  5. Step 5: Solve for x
    x = 1,470,087,809.97/52,105.62
  6. Step 6: Final answer
    x = 28,213.61

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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.