Home / 55,578.78-76,697.96-30,428.28

Finding the Fourth Proportional to 55,578.78, 76,697.96 and 30,428.28

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Solution

The fourth proportional to 55,578.78, 76,697.96 and 30,428.28 is: 41,990.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,578.78 : 76,697.96 = 30,428.28 : x
  2. Step 2: Convert to fraction form
    55,578.78/76,697.96 = 30,428.28/x
  3. Step 3: Cross multiply
    55,578.78x = 76,697.96 × 30,428.28
  4. Step 4: Simplify right side
    55,578.78x = 2,333,786,850.17
  5. Step 5: Solve for x
    x = 2,333,786,850.17/55,578.78
  6. Step 6: Final answer
    x = 41,990.61

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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.