Home / 68,074.56-102,144.60-51,316.65

Finding the Fourth Proportional to 68,074.56, 102,144.60 and 51,316.65

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Solution

The fourth proportional to 68,074.56, 102,144.60 and 51,316.65 is: 76,999.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,074.56 : 102,144.60 = 51,316.65 : x
  2. Step 2: Convert to fraction form
    68,074.56/102,144.60 = 51,316.65/x
  3. Step 3: Cross multiply
    68,074.56x = 102,144.60 × 51,316.65
  4. Step 4: Simplify right side
    68,074.56x = 5,241,718,687.59
  5. Step 5: Solve for x
    x = 5,241,718,687.59/68,074.56
  6. Step 6: Final answer
    x = 76,999.67

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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.