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Finding the Fourth Proportional to 54,711.78, 82,034.79 and 21,392.13

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Solution

The fourth proportional to 54,711.78, 82,034.79 and 21,392.13 is: 32,075.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,711.78 : 82,034.79 = 21,392.13 : x
  2. Step 2: Convert to fraction form
    54,711.78/82,034.79 = 21,392.13/x
  3. Step 3: Cross multiply
    54,711.78x = 82,034.79 × 21,392.13
  4. Step 4: Simplify right side
    54,711.78x = 1,754,898,892.20
  5. Step 5: Solve for x
    x = 1,754,898,892.20/54,711.78
  6. Step 6: Final answer
    x = 32,075.34

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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.