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Finding the Fourth Proportional to 68,168.65, 102,266.79 and 28,725.74

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Solution

The fourth proportional to 68,168.65, 102,266.79 and 28,725.74 is: 43,094.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,168.65 : 102,266.79 = 28,725.74 : x
  2. Step 2: Convert to fraction form
    68,168.65/102,266.79 = 28,725.74/x
  3. Step 3: Cross multiply
    68,168.65x = 102,266.79 × 28,725.74
  4. Step 4: Simplify right side
    68,168.65x = 2,937,689,220.17
  5. Step 5: Solve for x
    x = 2,937,689,220.17/68,168.65
  6. Step 6: Final answer
    x = 43,094.43

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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.