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Finding the Fourth Proportional to 50,062.80, 74,948.40 and 30,331.20

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Solution

The fourth proportional to 50,062.80, 74,948.40 and 30,331.20 is: 45,408.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,062.80 : 74,948.40 = 30,331.20 : x
  2. Step 2: Convert to fraction form
    50,062.80/74,948.40 = 30,331.20/x
  3. Step 3: Cross multiply
    50,062.80x = 74,948.40 × 30,331.20
  4. Step 4: Simplify right side
    50,062.80x = 2,273,274,910.08
  5. Step 5: Solve for x
    x = 2,273,274,910.08/50,062.80
  6. Step 6: Final answer
    x = 45,408.47

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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.