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Finding the Fourth Proportional to 70,815.54, 106,241.54 and 20,893.62

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Solution

The fourth proportional to 70,815.54, 106,241.54 and 20,893.62 is: 31,345.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,815.54 : 106,241.54 = 20,893.62 : x
  2. Step 2: Convert to fraction form
    70,815.54/106,241.54 = 20,893.62/x
  3. Step 3: Cross multiply
    70,815.54x = 106,241.54 × 20,893.62
  4. Step 4: Simplify right side
    70,815.54x = 2,219,770,260.51
  5. Step 5: Solve for x
    x = 2,219,770,260.51/70,815.54
  6. Step 6: Final answer
    x = 31,345.81

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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.