Home / 76,441.41-114,648.79-20,287.20

Finding the Fourth Proportional to 76,441.41, 114,648.79 and 20,287.20

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Solution

The fourth proportional to 76,441.41, 114,648.79 and 20,287.20 is: 30,427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,441.41 : 114,648.79 = 20,287.20 : x
  2. Step 2: Convert to fraction form
    76,441.41/114,648.79 = 20,287.20/x
  3. Step 3: Cross multiply
    76,441.41x = 114,648.79 × 20,287.20
  4. Step 4: Simplify right side
    76,441.41x = 2,325,902,257.81
  5. Step 5: Solve for x
    x = 2,325,902,257.81/76,441.41
  6. Step 6: Final answer
    x = 30,427.25

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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.