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Finding the Fourth Proportional to 69,874.44, 96,428.64 and 39,661.08

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Solution

The fourth proportional to 69,874.44, 96,428.64 and 39,661.08 is: 54,733.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,874.44 : 96,428.64 = 39,661.08 : x
  2. Step 2: Convert to fraction form
    69,874.44/96,428.64 = 39,661.08/x
  3. Step 3: Cross multiply
    69,874.44x = 96,428.64 × 39,661.08
  4. Step 4: Simplify right side
    69,874.44x = 3,824,464,005.33
  5. Step 5: Solve for x
    x = 3,824,464,005.33/69,874.44
  6. Step 6: Final answer
    x = 54,733.38

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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.