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Finding the Fourth Proportional to 54,124, 81,114.72 and 22,920.64

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Solution

The fourth proportional to 54,124, 81,114.72 and 22,920.64 is: 34,350.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,124 : 81,114.72 = 22,920.64 : x
  2. Step 2: Convert to fraction form
    54,124/81,114.72 = 22,920.64/x
  3. Step 3: Cross multiply
    54,124x = 81,114.72 × 22,920.64
  4. Step 4: Simplify right side
    54,124x = 1,859,201,295.82
  5. Step 5: Solve for x
    x = 1,859,201,295.82/54,124
  6. Step 6: Final answer
    x = 34,350.77

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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.