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Finding the Fourth Proportional to 70,074.50, 105,144.54 and 30,626.48

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Solution

The fourth proportional to 70,074.50, 105,144.54 and 30,626.48 is: 45,954.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,074.50 : 105,144.54 = 30,626.48 : x
  2. Step 2: Convert to fraction form
    70,074.50/105,144.54 = 30,626.48/x
  3. Step 3: Cross multiply
    70,074.50x = 105,144.54 × 30,626.48
  4. Step 4: Simplify right side
    70,074.50x = 3,220,206,625.70
  5. Step 5: Solve for x
    x = 3,220,206,625.70/70,074.50
  6. Step 6: Final answer
    x = 45,954.05

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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.