Home / 84,787.05-127,198.80-25,628.70

Finding the Fourth Proportional to 84,787.05, 127,198.80 and 25,628.70

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Solution

The fourth proportional to 84,787.05, 127,198.80 and 25,628.70 is: 38,448.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,787.05 : 127,198.80 = 25,628.70 : x
  2. Step 2: Convert to fraction form
    84,787.05/127,198.80 = 25,628.70/x
  3. Step 3: Cross multiply
    84,787.05x = 127,198.80 × 25,628.70
  4. Step 4: Simplify right side
    84,787.05x = 3,259,939,885.56
  5. Step 5: Solve for x
    x = 3,259,939,885.56/84,787.05
  6. Step 6: Final answer
    x = 38,448.56

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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.