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Finding the Fourth Proportional to 71,410.21, 107,190.69 and 69,801.74

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Solution

The fourth proportional to 71,410.21, 107,190.69 and 69,801.74 is: 104,776.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,410.21 : 107,190.69 = 69,801.74 : x
  2. Step 2: Convert to fraction form
    71,410.21/107,190.69 = 69,801.74/x
  3. Step 3: Cross multiply
    71,410.21x = 107,190.69 × 69,801.74
  4. Step 4: Simplify right side
    71,410.21x = 7,482,096,137.85
  5. Step 5: Solve for x
    x = 7,482,096,137.85/71,410.21
  6. Step 6: Final answer
    x = 104,776.28

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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.