Home / 66,828.36-100,257-20,084.88

Finding the Fourth Proportional to 66,828.36, 100,257 and 20,084.88

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Solution

The fourth proportional to 66,828.36, 100,257 and 20,084.88 is: 30,131.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,828.36 : 100,257 = 20,084.88 : x
  2. Step 2: Convert to fraction form
    66,828.36/100,257 = 20,084.88/x
  3. Step 3: Cross multiply
    66,828.36x = 100,257 × 20,084.88
  4. Step 4: Simplify right side
    66,828.36x = 2,013,649,814.16
  5. Step 5: Solve for x
    x = 2,013,649,814.16/66,828.36
  6. Step 6: Final answer
    x = 30,131.67

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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.