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Finding the Fourth Proportional to 55,485, 83,238.48 and 18,042.66

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Solution

The fourth proportional to 55,485, 83,238.48 and 18,042.66 is: 27,067.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,485 : 83,238.48 = 18,042.66 : x
  2. Step 2: Convert to fraction form
    55,485/83,238.48 = 18,042.66/x
  3. Step 3: Cross multiply
    55,485x = 83,238.48 × 18,042.66
  4. Step 4: Simplify right side
    55,485x = 1,501,843,593.56
  5. Step 5: Solve for x
    x = 1,501,843,593.56/55,485
  6. Step 6: Final answer
    x = 27,067.56

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1.5x scale

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.