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Finding the Fourth Proportional to 54,938, 82,423.38 and 38,958.32

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Solution

The fourth proportional to 54,938, 82,423.38 and 38,958.32 is: 58,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,938 : 82,423.38 = 38,958.32 : x
  2. Step 2: Convert to fraction form
    54,938/82,423.38 = 38,958.32/x
  3. Step 3: Cross multiply
    54,938x = 82,423.38 × 38,958.32
  4. Step 4: Simplify right side
    54,938x = 3,211,076,413.52
  5. Step 5: Solve for x
    x = 3,211,076,413.52/54,938
  6. Step 6: Final answer
    x = 58,449.10

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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.