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Finding the Fourth Proportional to 68,745.69, 94,871.66 and 38,531.57

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Solution

The fourth proportional to 68,745.69, 94,871.66 and 38,531.57 is: 53,175.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,745.69 : 94,871.66 = 38,531.57 : x
  2. Step 2: Convert to fraction form
    68,745.69/94,871.66 = 38,531.57/x
  3. Step 3: Cross multiply
    68,745.69x = 94,871.66 × 38,531.57
  4. Step 4: Simplify right side
    68,745.69x = 3,655,553,341.29
  5. Step 5: Solve for x
    x = 3,655,553,341.29/68,745.69
  6. Step 6: Final answer
    x = 53,175.02

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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.