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Finding the Fourth Proportional to 69,180.70, 103,771.08 and 53,408.76

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Solution

The fourth proportional to 69,180.70, 103,771.08 and 53,408.76 is: 80,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,180.70 : 103,771.08 = 53,408.76 : x
  2. Step 2: Convert to fraction form
    69,180.70/103,771.08 = 53,408.76/x
  3. Step 3: Cross multiply
    69,180.70x = 103,771.08 × 53,408.76
  4. Step 4: Simplify right side
    69,180.70x = 5,542,284,706.66
  5. Step 5: Solve for x
    x = 5,542,284,706.66/69,180.70
  6. Step 6: Final answer
    x = 80,113.16

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1.5x scale

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.