Home / 76,278.92-114,429.31-28,911.33

Finding the Fourth Proportional to 76,278.92, 114,429.31 and 28,911.33

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Solution

The fourth proportional to 76,278.92, 114,429.31 and 28,911.33 is: 43,371.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,278.92 : 114,429.31 = 28,911.33 : x
  2. Step 2: Convert to fraction form
    76,278.92/114,429.31 = 28,911.33/x
  3. Step 3: Cross multiply
    76,278.92x = 114,429.31 × 28,911.33
  4. Step 4: Simplify right side
    76,278.92x = 3,308,303,470.80
  5. Step 5: Solve for x
    x = 3,308,303,470.80/76,278.92
  6. Step 6: Final answer
    x = 43,371.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.