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Finding the Fourth Proportional to 68,369.01, 102,540.52 and 28,953.79

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Solution

The fourth proportional to 68,369.01, 102,540.52 and 28,953.79 is: 43,425.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,369.01 : 102,540.52 = 28,953.79 : x
  2. Step 2: Convert to fraction form
    68,369.01/102,540.52 = 28,953.79/x
  3. Step 3: Cross multiply
    68,369.01x = 102,540.52 × 28,953.79
  4. Step 4: Simplify right side
    68,369.01x = 2,968,936,682.57
  5. Step 5: Solve for x
    x = 2,968,936,682.57/68,369.01
  6. Step 6: Final answer
    x = 43,425.18

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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.