Home / 50,005.20-74,950.20-20,408.40

Finding the Fourth Proportional to 50,005.20, 74,950.20 and 20,408.40

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Solution

The fourth proportional to 50,005.20, 74,950.20 and 20,408.40 is: 30,589.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,005.20 : 74,950.20 = 20,408.40 : x
  2. Step 2: Convert to fraction form
    50,005.20/74,950.20 = 20,408.40/x
  3. Step 3: Cross multiply
    50,005.20x = 74,950.20 × 20,408.40
  4. Step 4: Simplify right side
    50,005.20x = 1,529,613,661.68
  5. Step 5: Solve for x
    x = 1,529,613,661.68/50,005.20
  6. Step 6: Final answer
    x = 30,589.09

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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.