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Finding the Fourth Proportional to 54,251.79, 81,502.75 and 52,009.81

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Solution

The fourth proportional to 54,251.79, 81,502.75 and 52,009.81 is: 78,134.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,251.79 : 81,502.75 = 52,009.81 : x
  2. Step 2: Convert to fraction form
    54,251.79/81,502.75 = 52,009.81/x
  3. Step 3: Cross multiply
    54,251.79x = 81,502.75 × 52,009.81
  4. Step 4: Simplify right side
    54,251.79x = 4,238,942,403.23
  5. Step 5: Solve for x
    x = 4,238,942,403.23/54,251.79
  6. Step 6: Final answer
    x = 78,134.61

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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.