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Finding the Fourth Proportional to 68,706, 94,814.28 and 38,898

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Solution

The fourth proportional to 68,706, 94,814.28 and 38,898 is: 53,679.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,706 : 94,814.28 = 38,898 : x
  2. Step 2: Convert to fraction form
    68,706/94,814.28 = 38,898/x
  3. Step 3: Cross multiply
    68,706x = 94,814.28 × 38,898
  4. Step 4: Simplify right side
    68,706x = 3,688,085,863.44
  5. Step 5: Solve for x
    x = 3,688,085,863.44/68,706
  6. Step 6: Final answer
    x = 53,679.24

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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.