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Finding the Fourth Proportional to 68,823.55, 94,981.08 and 38,611

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Solution

The fourth proportional to 68,823.55, 94,981.08 and 38,611 is: 53,285.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,823.55 : 94,981.08 = 38,611 : x
  2. Step 2: Convert to fraction form
    68,823.55/94,981.08 = 38,611/x
  3. Step 3: Cross multiply
    68,823.55x = 94,981.08 × 38,611
  4. Step 4: Simplify right side
    68,823.55x = 3,667,314,479.88
  5. Step 5: Solve for x
    x = 3,667,314,479.88/68,823.55
  6. Step 6: Final answer
    x = 53,285.75

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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.