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Finding the Fourth Proportional to 69,144.84, 103,712.40 and 39,469.68

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Solution

The fourth proportional to 69,144.84, 103,712.40 and 39,469.68 is: 59,201.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,144.84 : 103,712.40 = 39,469.68 : x
  2. Step 2: Convert to fraction form
    69,144.84/103,712.40 = 39,469.68/x
  3. Step 3: Cross multiply
    69,144.84x = 103,712.40 × 39,469.68
  4. Step 4: Simplify right side
    69,144.84x = 4,093,495,240.03
  5. Step 5: Solve for x
    x = 4,093,495,240.03/69,144.84
  6. Step 6: Final answer
    x = 59,201.75

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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.