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Finding the Fourth Proportional to 70,825.37, 106,213.30 and 20,892.21

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Solution

The fourth proportional to 70,825.37, 106,213.30 and 20,892.21 is: 31,331.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,825.37 : 106,213.30 = 20,892.21 : x
  2. Step 2: Convert to fraction form
    70,825.37/106,213.30 = 20,892.21/x
  3. Step 3: Cross multiply
    70,825.37x = 106,213.30 × 20,892.21
  4. Step 4: Simplify right side
    70,825.37x = 2,219,030,516.16
  5. Step 5: Solve for x
    x = 2,219,030,516.16/70,825.37
  6. Step 6: Final answer
    x = 31,331.01

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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.