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Finding the Fourth Proportional to 54,640.54, 81,960.76 and 19,604.80

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Solution

The fourth proportional to 54,640.54, 81,960.76 and 19,604.80 is: 29,407.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,640.54 : 81,960.76 = 19,604.80 : x
  2. Step 2: Convert to fraction form
    54,640.54/81,960.76 = 19,604.80/x
  3. Step 3: Cross multiply
    54,640.54x = 81,960.76 × 19,604.80
  4. Step 4: Simplify right side
    54,640.54x = 1,606,824,307.65
  5. Step 5: Solve for x
    x = 1,606,824,307.65/54,640.54
  6. Step 6: Final answer
    x = 29,407.18

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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.