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Finding the Fourth Proportional to 68,707.67, 103,113.95 and 30,768.62

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Solution

The fourth proportional to 68,707.67, 103,113.95 and 30,768.62 is: 46,176.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.67 : 103,113.95 = 30,768.62 : x
  2. Step 2: Convert to fraction form
    68,707.67/103,113.95 = 30,768.62/x
  3. Step 3: Cross multiply
    68,707.67x = 103,113.95 × 30,768.62
  4. Step 4: Simplify right side
    68,707.67x = 3,172,673,274.84
  5. Step 5: Solve for x
    x = 3,172,673,274.84/68,707.67
  6. Step 6: Final answer
    x = 46,176.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.