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Finding the Fourth Proportional to 50,930.61, 70,282.90 and 28,269.54

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Solution

The fourth proportional to 50,930.61, 70,282.90 and 28,269.54 is: 39,011.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,930.61 : 70,282.90 = 28,269.54 : x
  2. Step 2: Convert to fraction form
    50,930.61/70,282.90 = 28,269.54/x
  3. Step 3: Cross multiply
    50,930.61x = 70,282.90 × 28,269.54
  4. Step 4: Simplify right side
    50,930.61x = 1,986,865,252.87
  5. Step 5: Solve for x
    x = 1,986,865,252.87/50,930.61
  6. Step 6: Final answer
    x = 39,011.22

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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.