Home / 54,474.22-81,690.18-21,189.88

Finding the Fourth Proportional to 54,474.22, 81,690.18 and 21,189.88

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Solution

The fourth proportional to 54,474.22, 81,690.18 and 21,189.88 is: 31,776.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,474.22 : 81,690.18 = 21,189.88 : x
  2. Step 2: Convert to fraction form
    54,474.22/81,690.18 = 21,189.88/x
  3. Step 3: Cross multiply
    54,474.22x = 81,690.18 × 21,189.88
  4. Step 4: Simplify right side
    54,474.22x = 1,731,005,111.38
  5. Step 5: Solve for x
    x = 1,731,005,111.38/54,474.22
  6. Step 6: Final answer
    x = 31,776.59

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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.