Home / 54,455.80-81,645.26-21,148.12

Finding the Fourth Proportional to 54,455.80, 81,645.26 and 21,148.12

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Solution

The fourth proportional to 54,455.80, 81,645.26 and 21,148.12 is: 31,707.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,455.80 : 81,645.26 = 21,148.12 : x
  2. Step 2: Convert to fraction form
    54,455.80/81,645.26 = 21,148.12/x
  3. Step 3: Cross multiply
    54,455.80x = 81,645.26 × 21,148.12
  4. Step 4: Simplify right side
    54,455.80x = 1,726,643,755.91
  5. Step 5: Solve for x
    x = 1,726,643,755.91/54,455.80
  6. Step 6: Final answer
    x = 31,707.25

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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.