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Finding the Fourth Proportional to 49,230.87, 67,938.80 and 28,009.68

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Solution

The fourth proportional to 49,230.87, 67,938.80 and 28,009.68 is: 38,653.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,230.87 : 67,938.80 = 28,009.68 : x
  2. Step 2: Convert to fraction form
    49,230.87/67,938.80 = 28,009.68/x
  3. Step 3: Cross multiply
    49,230.87x = 67,938.80 × 28,009.68
  4. Step 4: Simplify right side
    49,230.87x = 1,902,943,907.54
  5. Step 5: Solve for x
    x = 1,902,943,907.54/49,230.87
  6. Step 6: Final answer
    x = 38,653.47

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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.