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Finding the Fourth Proportional to 68,297.10, 102,409.20 and 28,809.60

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Solution

The fourth proportional to 68,297.10, 102,409.20 and 28,809.60 is: 43,199.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,297.10 : 102,409.20 = 28,809.60 : x
  2. Step 2: Convert to fraction form
    68,297.10/102,409.20 = 28,809.60/x
  3. Step 3: Cross multiply
    68,297.10x = 102,409.20 × 28,809.60
  4. Step 4: Simplify right side
    68,297.10x = 2,950,368,088.32
  5. Step 5: Solve for x
    x = 2,950,368,088.32/68,297.10
  6. Step 6: Final answer
    x = 43,199.02

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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.