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Finding the Fourth Proportional to 54,011.90, 81,017.22 and 18,472.88

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Solution

The fourth proportional to 54,011.90, 81,017.22 and 18,472.88 is: 27,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,011.90 : 81,017.22 = 18,472.88 : x
  2. Step 2: Convert to fraction form
    54,011.90/81,017.22 = 18,472.88/x
  3. Step 3: Cross multiply
    54,011.90x = 81,017.22 × 18,472.88
  4. Step 4: Simplify right side
    54,011.90x = 1,496,621,382.99
  5. Step 5: Solve for x
    x = 1,496,621,382.99/54,011.90
  6. Step 6: Final answer
    x = 27,709.10

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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.