Home / 54,428.14-81,647.36-21,150.77

Finding the Fourth Proportional to 54,428.14, 81,647.36 and 21,150.77

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Solution

The fourth proportional to 54,428.14, 81,647.36 and 21,150.77 is: 31,728.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,428.14 : 81,647.36 = 21,150.77 : x
  2. Step 2: Convert to fraction form
    54,428.14/81,647.36 = 21,150.77/x
  3. Step 3: Cross multiply
    54,428.14x = 81,647.36 × 21,150.77
  4. Step 4: Simplify right side
    54,428.14x = 1,726,904,182.87
  5. Step 5: Solve for x
    x = 1,726,904,182.87/54,428.14
  6. Step 6: Final answer
    x = 31,728.15

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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.