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Finding the Fourth Proportional to 54,668.30, 81,978.15 and 21,377.30

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Solution

The fourth proportional to 54,668.30, 81,978.15 and 21,377.30 is: 32,056.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,668.30 : 81,978.15 = 21,377.30 : x
  2. Step 2: Convert to fraction form
    54,668.30/81,978.15 = 21,377.30/x
  3. Step 3: Cross multiply
    54,668.30x = 81,978.15 × 21,377.30
  4. Step 4: Simplify right side
    54,668.30x = 1,752,471,506.00
  5. Step 5: Solve for x
    x = 1,752,471,506.00/54,668.30
  6. Step 6: Final answer
    x = 32,056.45

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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.