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Finding the Fourth Proportional to 70,930.22, 106,410.87 and 21,014.24

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Solution

The fourth proportional to 70,930.22, 106,410.87 and 21,014.24 is: 31,525.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.22 : 106,410.87 = 21,014.24 : x
  2. Step 2: Convert to fraction form
    70,930.22/106,410.87 = 21,014.24/x
  3. Step 3: Cross multiply
    70,930.22x = 106,410.87 × 21,014.24
  4. Step 4: Simplify right side
    70,930.22x = 2,236,143,028.73
  5. Step 5: Solve for x
    x = 2,236,143,028.73/70,930.22
  6. Step 6: Final answer
    x = 31,525.96

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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.