Home / 51,219.78-76,828.75-19,621.27

Finding the Fourth Proportional to 51,219.78, 76,828.75 and 19,621.27

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Solution

The fourth proportional to 51,219.78, 76,828.75 and 19,621.27 is: 29,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,219.78 : 76,828.75 = 19,621.27 : x
  2. Step 2: Convert to fraction form
    51,219.78/76,828.75 = 19,621.27/x
  3. Step 3: Cross multiply
    51,219.78x = 76,828.75 × 19,621.27
  4. Step 4: Simplify right side
    51,219.78x = 1,507,477,804.86
  5. Step 5: Solve for x
    x = 1,507,477,804.86/51,219.78
  6. Step 6: Final answer
    x = 29,431.56

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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.