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Finding the Fourth Proportional to 70,343.40, 105,563.70 and 50,638.80

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Solution

The fourth proportional to 70,343.40, 105,563.70 and 50,638.80 is: 75,993.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,343.40 : 105,563.70 = 50,638.80 : x
  2. Step 2: Convert to fraction form
    70,343.40/105,563.70 = 50,638.80/x
  3. Step 3: Cross multiply
    70,343.40x = 105,563.70 × 50,638.80
  4. Step 4: Simplify right side
    70,343.40x = 5,345,619,091.56
  5. Step 5: Solve for x
    x = 5,345,619,091.56/70,343.40
  6. Step 6: Final answer
    x = 75,993.19

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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.