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Finding the Fourth Proportional to 54,435.80, 81,658.31 and 14,992.91

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Solution

The fourth proportional to 54,435.80, 81,658.31 and 14,992.91 is: 22,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435.80 : 81,658.31 = 14,992.91 : x
  2. Step 2: Convert to fraction form
    54,435.80/81,658.31 = 14,992.91/x
  3. Step 3: Cross multiply
    54,435.80x = 81,658.31 × 14,992.91
  4. Step 4: Simplify right side
    54,435.80x = 1,224,295,683.09
  5. Step 5: Solve for x
    x = 1,224,295,683.09/54,435.80
  6. Step 6: Final answer
    x = 22,490.64

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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.