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Finding the Fourth Proportional to 68,100.10, 102,020.55 and 40,365.70

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Solution

The fourth proportional to 68,100.10, 102,020.55 and 40,365.70 is: 60,471.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,100.10 : 102,020.55 = 40,365.70 : x
  2. Step 2: Convert to fraction form
    68,100.10/102,020.55 = 40,365.70/x
  3. Step 3: Cross multiply
    68,100.10x = 102,020.55 × 40,365.70
  4. Step 4: Simplify right side
    68,100.10x = 4,118,130,915.14
  5. Step 5: Solve for x
    x = 4,118,130,915.14/68,100.10
  6. Step 6: Final answer
    x = 60,471.73

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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.