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Finding the Fourth Proportional to 54,963.65, 82,390.05 and 21,670.80

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Solution

The fourth proportional to 54,963.65, 82,390.05 and 21,670.80 is: 32,484.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,963.65 : 82,390.05 = 21,670.80 : x
  2. Step 2: Convert to fraction form
    54,963.65/82,390.05 = 21,670.80/x
  3. Step 3: Cross multiply
    54,963.65x = 82,390.05 × 21,670.80
  4. Step 4: Simplify right side
    54,963.65x = 1,785,458,295.54
  5. Step 5: Solve for x
    x = 1,785,458,295.54/54,963.65
  6. Step 6: Final answer
    x = 32,484.35

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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.