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Finding the Fourth Proportional to 69,220.40, 103,757.69 and 35,905.10

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Solution

The fourth proportional to 69,220.40, 103,757.69 and 35,905.10 is: 53,819.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,220.40 : 103,757.69 = 35,905.10 : x
  2. Step 2: Convert to fraction form
    69,220.40/103,757.69 = 35,905.10/x
  3. Step 3: Cross multiply
    69,220.40x = 103,757.69 × 35,905.10
  4. Step 4: Simplify right side
    69,220.40x = 3,725,429,806.19
  5. Step 5: Solve for x
    x = 3,725,429,806.19/69,220.40
  6. Step 6: Final answer
    x = 53,819.83

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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.