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Finding the Fourth Proportional to 70,114.82, 105,172.22 and 18,824.20

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Solution

The fourth proportional to 70,114.82, 105,172.22 and 18,824.20 is: 28,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,114.82 : 105,172.22 = 18,824.20 : x
  2. Step 2: Convert to fraction form
    70,114.82/105,172.22 = 18,824.20/x
  3. Step 3: Cross multiply
    70,114.82x = 105,172.22 × 18,824.20
  4. Step 4: Simplify right side
    70,114.82x = 1,979,782,687.85
  5. Step 5: Solve for x
    x = 1,979,782,687.85/70,114.82
  6. Step 6: Final answer
    x = 28,236.30

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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.