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Finding the Fourth Proportional to 69,804.63, 104,705.60 and 19,885.05

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Solution

The fourth proportional to 69,804.63, 104,705.60 and 19,885.05 is: 29,827.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,804.63 : 104,705.60 = 19,885.05 : x
  2. Step 2: Convert to fraction form
    69,804.63/104,705.60 = 19,885.05/x
  3. Step 3: Cross multiply
    69,804.63x = 104,705.60 × 19,885.05
  4. Step 4: Simplify right side
    69,804.63x = 2,082,076,091.28
  5. Step 5: Solve for x
    x = 2,082,076,091.28/69,804.63
  6. Step 6: Final answer
    x = 29,827.19

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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.