Home / 54,278.10-81,417.15-18,739.35

Finding the Fourth Proportional to 54,278.10, 81,417.15 and 18,739.35

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Solution

The fourth proportional to 54,278.10, 81,417.15 and 18,739.35 is: 28,109.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,278.10 : 81,417.15 = 18,739.35 : x
  2. Step 2: Convert to fraction form
    54,278.10/81,417.15 = 18,739.35/x
  3. Step 3: Cross multiply
    54,278.10x = 81,417.15 × 18,739.35
  4. Step 4: Simplify right side
    54,278.10x = 1,525,704,469.85
  5. Step 5: Solve for x
    x = 1,525,704,469.85/54,278.10
  6. Step 6: Final answer
    x = 28,109.03

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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.