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Finding the Fourth Proportional to 71,190.45, 98,244.81 and 39,361.41

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Solution

The fourth proportional to 71,190.45, 98,244.81 and 39,361.41 is: 54,319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,190.45 : 98,244.81 = 39,361.41 : x
  2. Step 2: Convert to fraction form
    71,190.45/98,244.81 = 39,361.41/x
  3. Step 3: Cross multiply
    71,190.45x = 98,244.81 × 39,361.41
  4. Step 4: Simplify right side
    71,190.45x = 3,867,054,246.78
  5. Step 5: Solve for x
    x = 3,867,054,246.78/71,190.45
  6. Step 6: Final answer
    x = 54,319.85

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1.5x scale

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.