Home / 54,465.30-81,637.20-21,174.30

Finding the Fourth Proportional to 54,465.30, 81,637.20 and 21,174.30

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Solution

The fourth proportional to 54,465.30, 81,637.20 and 21,174.30 is: 31,737.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,465.30 : 81,637.20 = 21,174.30 : x
  2. Step 2: Convert to fraction form
    54,465.30/81,637.20 = 21,174.30/x
  3. Step 3: Cross multiply
    54,465.30x = 81,637.20 × 21,174.30
  4. Step 4: Simplify right side
    54,465.30x = 1,728,610,563.96
  5. Step 5: Solve for x
    x = 1,728,610,563.96/54,465.30
  6. Step 6: Final answer
    x = 31,737.83

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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.