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Finding the Fourth Proportional to 54,527.66, 81,758 and 21,208.89

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Solution

The fourth proportional to 54,527.66, 81,758 and 21,208.89 is: 31,800.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,527.66 : 81,758 = 21,208.89 : x
  2. Step 2: Convert to fraction form
    54,527.66/81,758 = 21,208.89/x
  3. Step 3: Cross multiply
    54,527.66x = 81,758 × 21,208.89
  4. Step 4: Simplify right side
    54,527.66x = 1,733,996,428.62
  5. Step 5: Solve for x
    x = 1,733,996,428.62/54,527.66
  6. Step 6: Final answer
    x = 31,800.31

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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.