Home / 55,815.36-77,025.28-30,321.28

Finding the Fourth Proportional to 55,815.36, 77,025.28 and 30,321.28

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Solution

The fourth proportional to 55,815.36, 77,025.28 and 30,321.28 is: 41,843.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,815.36 : 77,025.28 = 30,321.28 : x
  2. Step 2: Convert to fraction form
    55,815.36/77,025.28 = 30,321.28/x
  3. Step 3: Cross multiply
    55,815.36x = 77,025.28 × 30,321.28
  4. Step 4: Simplify right side
    55,815.36x = 2,335,505,081.96
  5. Step 5: Solve for x
    x = 2,335,505,081.96/55,815.36
  6. Step 6: Final answer
    x = 41,843.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.