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Finding the Fourth Proportional to 68,532.80, 102,734.40 and 40,474.40

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Solution

The fourth proportional to 68,532.80, 102,734.40 and 40,474.40 is: 60,673.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,532.80 : 102,734.40 = 40,474.40 : x
  2. Step 2: Convert to fraction form
    68,532.80/102,734.40 = 40,474.40/x
  3. Step 3: Cross multiply
    68,532.80x = 102,734.40 × 40,474.40
  4. Step 4: Simplify right side
    68,532.80x = 4,158,113,199.36
  5. Step 5: Solve for x
    x = 4,158,113,199.36/68,532.80
  6. Step 6: Final answer
    x = 60,673.33

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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.