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Finding the Fourth Proportional to 45,348.60, 68,055.30 and 19,072.20

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Solution

The fourth proportional to 45,348.60, 68,055.30 and 19,072.20 is: 28,621.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,348.60 : 68,055.30 = 19,072.20 : x
  2. Step 2: Convert to fraction form
    45,348.60/68,055.30 = 19,072.20/x
  3. Step 3: Cross multiply
    45,348.60x = 68,055.30 × 19,072.20
  4. Step 4: Simplify right side
    45,348.60x = 1,297,964,292.66
  5. Step 5: Solve for x
    x = 1,297,964,292.66/45,348.60
  6. Step 6: Final answer
    x = 28,621.93

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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.