Home / 56,112.15-84,138.66-18,668.28

Finding the Fourth Proportional to 56,112.15, 84,138.66 and 18,668.28

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Solution

The fourth proportional to 56,112.15, 84,138.66 and 18,668.28 is: 27,992.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,112.15 : 84,138.66 = 18,668.28 : x
  2. Step 2: Convert to fraction form
    56,112.15/84,138.66 = 18,668.28/x
  3. Step 3: Cross multiply
    56,112.15x = 84,138.66 × 18,668.28
  4. Step 4: Simplify right side
    56,112.15x = 1,570,724,063.70
  5. Step 5: Solve for x
    x = 1,570,724,063.70/56,112.15
  6. Step 6: Final answer
    x = 27,992.58

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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.