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Finding the Fourth Proportional to 54,048.80, 81,072.90 and 18,510.44

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Solution

The fourth proportional to 54,048.80, 81,072.90 and 18,510.44 is: 27,765.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,048.80 : 81,072.90 = 18,510.44 : x
  2. Step 2: Convert to fraction form
    54,048.80/81,072.90 = 18,510.44/x
  3. Step 3: Cross multiply
    54,048.80x = 81,072.90 × 18,510.44
  4. Step 4: Simplify right side
    54,048.80x = 1,500,694,645.71
  5. Step 5: Solve for x
    x = 1,500,694,645.71/54,048.80
  6. Step 6: Final answer
    x = 27,765.55

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1.5x scale

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.