Home / 54,474.47-81,690.65-21,190.04

Finding the Fourth Proportional to 54,474.47, 81,690.65 and 21,190.04

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Solution

The fourth proportional to 54,474.47, 81,690.65 and 21,190.04 is: 31,776.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,474.47 : 81,690.65 = 21,190.04 : x
  2. Step 2: Convert to fraction form
    54,474.47/81,690.65 = 21,190.04/x
  3. Step 3: Cross multiply
    54,474.47x = 81,690.65 × 21,190.04
  4. Step 4: Simplify right side
    54,474.47x = 1,731,028,035.18
  5. Step 5: Solve for x
    x = 1,731,028,035.18/54,474.47
  6. Step 6: Final answer
    x = 31,776.87

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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.