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Finding the Fourth Proportional to 70,914.02, 106,370.70 and 20,994.42

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Solution

The fourth proportional to 70,914.02, 106,370.70 and 20,994.42 is: 31,491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,914.02 : 106,370.70 = 20,994.42 : x
  2. Step 2: Convert to fraction form
    70,914.02/106,370.70 = 20,994.42/x
  3. Step 3: Cross multiply
    70,914.02x = 106,370.70 × 20,994.42
  4. Step 4: Simplify right side
    70,914.02x = 2,233,191,151.49
  5. Step 5: Solve for x
    x = 2,233,191,151.49/70,914.02
  6. Step 6: Final answer
    x = 31,491.53

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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.