Home / 54,474.24-81,690.28-21,189.76

Finding the Fourth Proportional to 54,474.24, 81,690.28 and 21,189.76

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Solution

The fourth proportional to 54,474.24, 81,690.28 and 21,189.76 is: 31,776.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,474.24 : 81,690.28 = 21,189.76 : x
  2. Step 2: Convert to fraction form
    54,474.24/81,690.28 = 21,189.76/x
  3. Step 3: Cross multiply
    54,474.24x = 81,690.28 × 21,189.76
  4. Step 4: Simplify right side
    54,474.24x = 1,730,997,427.53
  5. Step 5: Solve for x
    x = 1,730,997,427.53/54,474.24
  6. Step 6: Final answer
    x = 31,776.44

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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.