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Finding the Fourth Proportional to 50,891.45, 70,230.62 and 28,231.93

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Solution

The fourth proportional to 50,891.45, 70,230.62 and 28,231.93 is: 38,960.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,891.45 : 70,230.62 = 28,231.93 : x
  2. Step 2: Convert to fraction form
    50,891.45/70,230.62 = 28,231.93/x
  3. Step 3: Cross multiply
    50,891.45x = 70,230.62 × 28,231.93
  4. Step 4: Simplify right side
    50,891.45x = 1,982,745,667.12
  5. Step 5: Solve for x
    x = 1,982,745,667.12/50,891.45
  6. Step 6: Final answer
    x = 38,960.29

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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.