Home / 81,007.20-111,789.63-45,197.19

Finding the Fourth Proportional to 81,007.20, 111,789.63 and 45,197.19

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Solution

The fourth proportional to 81,007.20, 111,789.63 and 45,197.19 is: 62,371.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,007.20 : 111,789.63 = 45,197.19 : x
  2. Step 2: Convert to fraction form
    81,007.20/111,789.63 = 45,197.19/x
  3. Step 3: Cross multiply
    81,007.20x = 111,789.63 × 45,197.19
  4. Step 4: Simplify right side
    81,007.20x = 5,052,577,147.14
  5. Step 5: Solve for x
    x = 5,052,577,147.14/81,007.20
  6. Step 6: Final answer
    x = 62,371.95

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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.