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Finding the Fourth Proportional to 68,840.73, 103,094.78 and 39,168.68

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Solution

The fourth proportional to 68,840.73, 103,094.78 and 39,168.68 is: 58,658.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,840.73 : 103,094.78 = 39,168.68 : x
  2. Step 2: Convert to fraction form
    68,840.73/103,094.78 = 39,168.68/x
  3. Step 3: Cross multiply
    68,840.73x = 103,094.78 × 39,168.68
  4. Step 4: Simplify right side
    68,840.73x = 4,038,085,736.17
  5. Step 5: Solve for x
    x = 4,038,085,736.17/68,840.73
  6. Step 6: Final answer
    x = 58,658.38

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1.5x scale

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.