Home / 50,489.20-75,685.50-18,890.68

Finding the Fourth Proportional to 50,489.20, 75,685.50 and 18,890.68

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Solution

The fourth proportional to 50,489.20, 75,685.50 and 18,890.68 is: 28,317.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,489.20 : 75,685.50 = 18,890.68 : x
  2. Step 2: Convert to fraction form
    50,489.20/75,685.50 = 18,890.68/x
  3. Step 3: Cross multiply
    50,489.20x = 75,685.50 × 18,890.68
  4. Step 4: Simplify right side
    50,489.20x = 1,429,750,561.14
  5. Step 5: Solve for x
    x = 1,429,750,561.14/50,489.20
  6. Step 6: Final answer
    x = 28,317.95

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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.