Home / 43,142.72-64,668-30,793.28

Finding the Fourth Proportional to 43,142.72, 64,668 and 30,793.28

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Solution

The fourth proportional to 43,142.72, 64,668 and 30,793.28 is: 46,157.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,142.72 : 64,668 = 30,793.28 : x
  2. Step 2: Convert to fraction form
    43,142.72/64,668 = 30,793.28/x
  3. Step 3: Cross multiply
    43,142.72x = 64,668 × 30,793.28
  4. Step 4: Simplify right side
    43,142.72x = 1,991,339,831.04
  5. Step 5: Solve for x
    x = 1,991,339,831.04/43,142.72
  6. Step 6: Final answer
    x = 46,157.03

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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.