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Finding the Fourth Proportional to 54,668.54, 81,703.28 and 39,908.54

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Solution

The fourth proportional to 54,668.54, 81,703.28 and 39,908.54 is: 59,644.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,668.54 : 81,703.28 = 39,908.54 : x
  2. Step 2: Convert to fraction form
    54,668.54/81,703.28 = 39,908.54/x
  3. Step 3: Cross multiply
    54,668.54x = 81,703.28 × 39,908.54
  4. Step 4: Simplify right side
    54,668.54x = 3,260,658,159.61
  5. Step 5: Solve for x
    x = 3,260,658,159.61/54,668.54
  6. Step 6: Final answer
    x = 59,644.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.