Home / 80,828.76-121,262.64-25,424.76

Finding the Fourth Proportional to 80,828.76, 121,262.64 and 25,424.76

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Solution

The fourth proportional to 80,828.76, 121,262.64 and 25,424.76 is: 38,143.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,828.76 : 121,262.64 = 25,424.76 : x
  2. Step 2: Convert to fraction form
    80,828.76/121,262.64 = 25,424.76/x
  3. Step 3: Cross multiply
    80,828.76x = 121,262.64 × 25,424.76
  4. Step 4: Simplify right side
    80,828.76x = 3,083,073,518.97
  5. Step 5: Solve for x
    x = 3,083,073,518.97/80,828.76
  6. Step 6: Final answer
    x = 38,143.27

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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.