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Finding the Fourth Proportional to 53,361.36, 80,041.77 and 13,917.60

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Solution

The fourth proportional to 53,361.36, 80,041.77 and 13,917.60 is: 20,876.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,361.36 : 80,041.77 = 13,917.60 : x
  2. Step 2: Convert to fraction form
    53,361.36/80,041.77 = 13,917.60/x
  3. Step 3: Cross multiply
    53,361.36x = 80,041.77 × 13,917.60
  4. Step 4: Simplify right side
    53,361.36x = 1,113,989,338.15
  5. Step 5: Solve for x
    x = 1,113,989,338.15/53,361.36
  6. Step 6: Final answer
    x = 20,876.33

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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.