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Finding the Fourth Proportional to 49,871.92, 74,766.48 and 20,303.68

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Solution

The fourth proportional to 49,871.92, 74,766.48 and 20,303.68 is: 30,438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,871.92 : 74,766.48 = 20,303.68 : x
  2. Step 2: Convert to fraction form
    49,871.92/74,766.48 = 20,303.68/x
  3. Step 3: Cross multiply
    49,871.92x = 74,766.48 × 20,303.68
  4. Step 4: Simplify right side
    49,871.92x = 1,518,034,684.65
  5. Step 5: Solve for x
    x = 1,518,034,684.65/49,871.92
  6. Step 6: Final answer
    x = 30,438.67

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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.