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Finding the Fourth Proportional to 50,490.40, 75,764.40 and 34,919.20

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Solution

The fourth proportional to 50,490.40, 75,764.40 and 34,919.20 is: 52,398.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,490.40 : 75,764.40 = 34,919.20 : x
  2. Step 2: Convert to fraction form
    50,490.40/75,764.40 = 34,919.20/x
  3. Step 3: Cross multiply
    50,490.40x = 75,764.40 × 34,919.20
  4. Step 4: Simplify right side
    50,490.40x = 2,645,632,236.48
  5. Step 5: Solve for x
    x = 2,645,632,236.48/50,490.40
  6. Step 6: Final answer
    x = 52,398.72

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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.