Home / 81,974.80-122,966.58-25,819.28

Finding the Fourth Proportional to 81,974.80, 122,966.58 and 25,819.28

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Solution

The fourth proportional to 81,974.80, 122,966.58 and 25,819.28 is: 38,730.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,974.80 : 122,966.58 = 25,819.28 : x
  2. Step 2: Convert to fraction form
    81,974.80/122,966.58 = 25,819.28/x
  3. Step 3: Cross multiply
    81,974.80x = 122,966.58 × 25,819.28
  4. Step 4: Simplify right side
    81,974.80x = 3,174,908,559.66
  5. Step 5: Solve for x
    x = 3,174,908,559.66/81,974.80
  6. Step 6: Final answer
    x = 38,730.30

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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.