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Finding the Fourth Proportional to 54,990.97, 82,465.93 and 21,699.97

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Solution

The fourth proportional to 54,990.97, 82,465.93 and 21,699.97 is: 32,541.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,990.97 : 82,465.93 = 21,699.97 : x
  2. Step 2: Convert to fraction form
    54,990.97/82,465.93 = 21,699.97/x
  3. Step 3: Cross multiply
    54,990.97x = 82,465.93 × 21,699.97
  4. Step 4: Simplify right side
    54,990.97x = 1,789,508,027.98
  5. Step 5: Solve for x
    x = 1,789,508,027.98/54,990.97
  6. Step 6: Final answer
    x = 32,541.85

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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.