Home / 70,500.42-105,731.19-30,532.86

Finding the Fourth Proportional to 70,500.42, 105,731.19 and 30,532.86

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Solution

The fourth proportional to 70,500.42, 105,731.19 and 30,532.86 is: 45,790.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,500.42 : 105,731.19 = 30,532.86 : x
  2. Step 2: Convert to fraction form
    70,500.42/105,731.19 = 30,532.86/x
  3. Step 3: Cross multiply
    70,500.42x = 105,731.19 × 30,532.86
  4. Step 4: Simplify right side
    70,500.42x = 3,228,275,621.90
  5. Step 5: Solve for x
    x = 3,228,275,621.90/70,500.42
  6. Step 6: Final answer
    x = 45,790.87

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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.