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Finding the Fourth Proportional to 50,134.40, 75,230.40 and 18,972.80

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Solution

The fourth proportional to 50,134.40, 75,230.40 and 18,972.80 is: 28,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,134.40 : 75,230.40 = 18,972.80 : x
  2. Step 2: Convert to fraction form
    50,134.40/75,230.40 = 18,972.80/x
  3. Step 3: Cross multiply
    50,134.40x = 75,230.40 × 18,972.80
  4. Step 4: Simplify right side
    50,134.40x = 1,427,331,333.12
  5. Step 5: Solve for x
    x = 1,427,331,333.12/50,134.40
  6. Step 6: Final answer
    x = 28,470.10

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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.