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Finding the Fourth Proportional to 54,661.56, 81,992.36 and 42,199.78

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Solution

The fourth proportional to 54,661.56, 81,992.36 and 42,199.78 is: 63,299.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,661.56 : 81,992.36 = 42,199.78 : x
  2. Step 2: Convert to fraction form
    54,661.56/81,992.36 = 42,199.78/x
  3. Step 3: Cross multiply
    54,661.56x = 81,992.36 × 42,199.78
  4. Step 4: Simplify right side
    54,661.56x = 3,460,059,553.68
  5. Step 5: Solve for x
    x = 3,460,059,553.68/54,661.56
  6. Step 6: Final answer
    x = 63,299.69

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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.