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Finding the Fourth Proportional to 50,935, 70,291.38 and 28,579

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Solution

The fourth proportional to 50,935, 70,291.38 and 28,579 is: 39,439.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,935 : 70,291.38 = 28,579 : x
  2. Step 2: Convert to fraction form
    50,935/70,291.38 = 28,579/x
  3. Step 3: Cross multiply
    50,935x = 70,291.38 × 28,579
  4. Step 4: Simplify right side
    50,935x = 2,008,857,349.02
  5. Step 5: Solve for x
    x = 2,008,857,349.02/50,935
  6. Step 6: Final answer
    x = 39,439.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.