Home / 54,387.94-81,581.91-19,328.98

Finding the Fourth Proportional to 54,387.94, 81,581.91 and 19,328.98

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Solution

The fourth proportional to 54,387.94, 81,581.91 and 19,328.98 is: 28,993.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,387.94 : 81,581.91 = 19,328.98 : x
  2. Step 2: Convert to fraction form
    54,387.94/81,581.91 = 19,328.98/x
  3. Step 3: Cross multiply
    54,387.94x = 81,581.91 × 19,328.98
  4. Step 4: Simplify right side
    54,387.94x = 1,576,895,106.75
  5. Step 5: Solve for x
    x = 1,576,895,106.75/54,387.94
  6. Step 6: Final answer
    x = 28,993.47

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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.