Home / 75,879.28-104,716.68-42,345.28

Finding the Fourth Proportional to 75,879.28, 104,716.68 and 42,345.28

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Solution

The fourth proportional to 75,879.28, 104,716.68 and 42,345.28 is: 58,438.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,879.28 : 104,716.68 = 42,345.28 : x
  2. Step 2: Convert to fraction form
    75,879.28/104,716.68 = 42,345.28/x
  3. Step 3: Cross multiply
    75,879.28x = 104,716.68 × 42,345.28
  4. Step 4: Simplify right side
    75,879.28x = 4,434,257,135.27
  5. Step 5: Solve for x
    x = 4,434,257,135.27/75,879.28
  6. Step 6: Final answer
    x = 58,438.31

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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.