Home / 54,290.51-81,420.14-18,742.58

Finding the Fourth Proportional to 54,290.51, 81,420.14 and 18,742.58

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Solution

The fourth proportional to 54,290.51, 81,420.14 and 18,742.58 is: 28,108.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,290.51 : 81,420.14 = 18,742.58 : x
  2. Step 2: Convert to fraction form
    54,290.51/81,420.14 = 18,742.58/x
  3. Step 3: Cross multiply
    54,290.51x = 81,420.14 × 18,742.58
  4. Step 4: Simplify right side
    54,290.51x = 1,526,022,986.75
  5. Step 5: Solve for x
    x = 1,526,022,986.75/54,290.51
  6. Step 6: Final answer
    x = 28,108.47

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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.