Home / 70,344.40-105,565.20-50,639.80

Finding the Fourth Proportional to 70,344.40, 105,565.20 and 50,639.80

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Solution

The fourth proportional to 70,344.40, 105,565.20 and 50,639.80 is: 75,994.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,344.40 : 105,565.20 = 50,639.80 : x
  2. Step 2: Convert to fraction form
    70,344.40/105,565.20 = 50,639.80/x
  3. Step 3: Cross multiply
    70,344.40x = 105,565.20 × 50,639.80
  4. Step 4: Simplify right side
    70,344.40x = 5,345,800,614.96
  5. Step 5: Solve for x
    x = 5,345,800,614.96/70,344.40
  6. Step 6: Final answer
    x = 75,994.69

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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.