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Finding the Fourth Proportional to 68,699, 94,804.62 and 38,891

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Solution

The fourth proportional to 68,699, 94,804.62 and 38,891 is: 53,669.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,699 : 94,804.62 = 38,891 : x
  2. Step 2: Convert to fraction form
    68,699/94,804.62 = 38,891/x
  3. Step 3: Cross multiply
    68,699x = 94,804.62 × 38,891
  4. Step 4: Simplify right side
    68,699x = 3,687,046,476.42
  5. Step 5: Solve for x
    x = 3,687,046,476.42/68,699
  6. Step 6: Final answer
    x = 53,669.58

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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.