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Finding the Fourth Proportional to 50,389.73, 75,578.78 and 18,800.90

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Solution

The fourth proportional to 50,389.73, 75,578.78 and 18,800.90 is: 28,199.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,389.73 : 75,578.78 = 18,800.90 : x
  2. Step 2: Convert to fraction form
    50,389.73/75,578.78 = 18,800.90/x
  3. Step 3: Cross multiply
    50,389.73x = 75,578.78 × 18,800.90
  4. Step 4: Simplify right side
    50,389.73x = 1,420,948,613.00
  5. Step 5: Solve for x
    x = 1,420,948,613.00/50,389.73
  6. Step 6: Final answer
    x = 28,199.17

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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.