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Finding the Fourth Proportional to 71,057.22, 98,056.38 and 39,225.43

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Solution

The fourth proportional to 71,057.22, 98,056.38 and 39,225.43 is: 54,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,057.22 : 98,056.38 = 39,225.43 : x
  2. Step 2: Convert to fraction form
    71,057.22/98,056.38 = 39,225.43/x
  3. Step 3: Cross multiply
    71,057.22x = 98,056.38 × 39,225.43
  4. Step 4: Simplify right side
    71,057.22x = 3,846,303,939.41
  5. Step 5: Solve for x
    x = 3,846,303,939.41/71,057.22
  6. Step 6: Final answer
    x = 54,129.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.