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Finding the Fourth Proportional to 70,022.37, 105,033.39 and 30,015.42

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Solution

The fourth proportional to 70,022.37, 105,033.39 and 30,015.42 is: 45,023.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,022.37 : 105,033.39 = 30,015.42 : x
  2. Step 2: Convert to fraction form
    70,022.37/105,033.39 = 30,015.42/x
  3. Step 3: Cross multiply
    70,022.37x = 105,033.39 × 30,015.42
  4. Step 4: Simplify right side
    70,022.37x = 3,152,620,808.44
  5. Step 5: Solve for x
    x = 3,152,620,808.44/70,022.37
  6. Step 6: Final answer
    x = 45,023.05

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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.