Home / 81,048.75-121,573.67-25,644.75

Finding the Fourth Proportional to 81,048.75, 121,573.67 and 25,644.75

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Solution

The fourth proportional to 81,048.75, 121,573.67 and 25,644.75 is: 38,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,048.75 : 121,573.67 = 25,644.75 : x
  2. Step 2: Convert to fraction form
    81,048.75/121,573.67 = 25,644.75/x
  3. Step 3: Cross multiply
    81,048.75x = 121,573.67 × 25,644.75
  4. Step 4: Simplify right side
    81,048.75x = 3,117,726,373.73
  5. Step 5: Solve for x
    x = 3,117,726,373.73/81,048.75
  6. Step 6: Final answer
    x = 38,467.30

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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.