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Finding the Fourth Proportional to 68,307, 94,280.94 and 38,516.28

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Solution

The fourth proportional to 68,307, 94,280.94 and 38,516.28 is: 53,162.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,307 : 94,280.94 = 38,516.28 : x
  2. Step 2: Convert to fraction form
    68,307/94,280.94 = 38,516.28/x
  3. Step 3: Cross multiply
    68,307x = 94,280.94 × 38,516.28
  4. Step 4: Simplify right side
    68,307x = 3,631,351,083.70
  5. Step 5: Solve for x
    x = 3,631,351,083.70/68,307
  6. Step 6: Final answer
    x = 53,162.21

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1.5x scale

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.