Home / 80,668.72-111,306.44-47,128.24

Finding the Fourth Proportional to 80,668.72, 111,306.44 and 47,128.24

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Solution

The fourth proportional to 80,668.72, 111,306.44 and 47,128.24 is: 65,027.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,668.72 : 111,306.44 = 47,128.24 : x
  2. Step 2: Convert to fraction form
    80,668.72/111,306.44 = 47,128.24/x
  3. Step 3: Cross multiply
    80,668.72x = 111,306.44 × 47,128.24
  4. Step 4: Simplify right side
    80,668.72x = 5,245,676,617.87
  5. Step 5: Solve for x
    x = 5,245,676,617.87/80,668.72
  6. Step 6: Final answer
    x = 65,027.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.