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Finding the Fourth Proportional to 104,355.54, 143,945.10 and 61,884

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Solution

The fourth proportional to 104,355.54, 143,945.10 and 61,884 is: 85,361.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,355.54 : 143,945.10 = 61,884 : x
  2. Step 2: Convert to fraction form
    104,355.54/143,945.10 = 61,884/x
  3. Step 3: Cross multiply
    104,355.54x = 143,945.10 × 61,884
  4. Step 4: Simplify right side
    104,355.54x = 8,907,898,568.40
  5. Step 5: Solve for x
    x = 8,907,898,568.40/104,355.54
  6. Step 6: Final answer
    x = 85,361.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.