Home / 55,709.14-76,879.20-30,215.54

Finding the Fourth Proportional to 55,709.14, 76,879.20 and 30,215.54

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Solution

The fourth proportional to 55,709.14, 76,879.20 and 30,215.54 is: 41,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,709.14 : 76,879.20 = 30,215.54 : x
  2. Step 2: Convert to fraction form
    55,709.14/76,879.20 = 30,215.54/x
  3. Step 3: Cross multiply
    55,709.14x = 76,879.20 × 30,215.54
  4. Step 4: Simplify right side
    55,709.14x = 2,322,946,158.37
  5. Step 5: Solve for x
    x = 2,322,946,158.37/55,709.14
  6. Step 6: Final answer
    x = 41,697.76

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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.