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Finding the Fourth Proportional to 69,935.78, 96,547.87 and 54,589.38

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Solution

The fourth proportional to 69,935.78, 96,547.87 and 54,589.38 is: 75,361.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,935.78 : 96,547.87 = 54,589.38 : x
  2. Step 2: Convert to fraction form
    69,935.78/96,547.87 = 54,589.38/x
  3. Step 3: Cross multiply
    69,935.78x = 96,547.87 × 54,589.38
  4. Step 4: Simplify right side
    69,935.78x = 5,270,488,363.62
  5. Step 5: Solve for x
    x = 5,270,488,363.62/69,935.78
  6. Step 6: Final answer
    x = 75,361.83

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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.