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Finding the Fourth Proportional to 56,383.56, 84,568.86 and 18,942.12

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Solution

The fourth proportional to 56,383.56, 84,568.86 and 18,942.12 is: 28,411.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,383.56 : 84,568.86 = 18,942.12 : x
  2. Step 2: Convert to fraction form
    56,383.56/84,568.86 = 18,942.12/x
  3. Step 3: Cross multiply
    56,383.56x = 84,568.86 × 18,942.12
  4. Step 4: Simplify right side
    56,383.56x = 1,601,913,494.38
  5. Step 5: Solve for x
    x = 1,601,913,494.38/56,383.56
  6. Step 6: Final answer
    x = 28,411.00

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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.