Home / 42,668.37-64,009.39-20,481.26

Finding the Fourth Proportional to 42,668.37, 64,009.39 and 20,481.26

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Solution

The fourth proportional to 42,668.37, 64,009.39 and 20,481.26 is: 30,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,668.37 : 64,009.39 = 20,481.26 : x
  2. Step 2: Convert to fraction form
    42,668.37/64,009.39 = 20,481.26/x
  3. Step 3: Cross multiply
    42,668.37x = 64,009.39 × 20,481.26
  4. Step 4: Simplify right side
    42,668.37x = 1,310,992,626.18
  5. Step 5: Solve for x
    x = 1,310,992,626.18/42,668.37
  6. Step 6: Final answer
    x = 30,725.16

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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.