Home / 69,879.28-96,434.58-39,665.54

Finding the Fourth Proportional to 69,879.28, 96,434.58 and 39,665.54

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Solution

The fourth proportional to 69,879.28, 96,434.58 and 39,665.54 is: 54,739.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,879.28 : 96,434.58 = 39,665.54 : x
  2. Step 2: Convert to fraction form
    69,879.28/96,434.58 = 39,665.54/x
  3. Step 3: Cross multiply
    69,879.28x = 96,434.58 × 39,665.54
  4. Step 4: Simplify right side
    69,879.28x = 3,825,129,449.29
  5. Step 5: Solve for x
    x = 3,825,129,449.29/69,879.28
  6. Step 6: Final answer
    x = 54,739.11

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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.