Home / 43,240.32-64,837.92-20,420.36

Finding the Fourth Proportional to 43,240.32, 64,837.92 and 20,420.36

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Solution

The fourth proportional to 43,240.32, 64,837.92 and 20,420.36 is: 30,619.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,240.32 : 64,837.92 = 20,420.36 : x
  2. Step 2: Convert to fraction form
    43,240.32/64,837.92 = 20,420.36/x
  3. Step 3: Cross multiply
    43,240.32x = 64,837.92 × 20,420.36
  4. Step 4: Simplify right side
    43,240.32x = 1,324,013,668.05
  5. Step 5: Solve for x
    x = 1,324,013,668.05/43,240.32
  6. Step 6: Final answer
    x = 30,619.89

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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.