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Finding the Fourth Proportional to 69,410.60, 104,115.90 and 31,970.60

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Solution

The fourth proportional to 69,410.60, 104,115.90 and 31,970.60 is: 47,955.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,410.60 : 104,115.90 = 31,970.60 : x
  2. Step 2: Convert to fraction form
    69,410.60/104,115.90 = 31,970.60/x
  3. Step 3: Cross multiply
    69,410.60x = 104,115.90 × 31,970.60
  4. Step 4: Simplify right side
    69,410.60x = 3,328,647,792.54
  5. Step 5: Solve for x
    x = 3,328,647,792.54/69,410.60
  6. Step 6: Final answer
    x = 47,955.90

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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.