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Finding the Fourth Proportional to 45,336.78, 68,009.22 and 14,171.22

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Solution

The fourth proportional to 45,336.78, 68,009.22 and 14,171.22 is: 21,258.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,336.78 : 68,009.22 = 14,171.22 : x
  2. Step 2: Convert to fraction form
    45,336.78/68,009.22 = 14,171.22/x
  3. Step 3: Cross multiply
    45,336.78x = 68,009.22 × 14,171.22
  4. Step 4: Simplify right side
    45,336.78x = 963,773,618.65
  5. Step 5: Solve for x
    x = 963,773,618.65/45,336.78
  6. Step 6: Final answer
    x = 21,258.10

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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.