Home / 54,858.51-75,704.34-30,989.85

Finding the Fourth Proportional to 54,858.51, 75,704.34 and 30,989.85

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Solution

The fourth proportional to 54,858.51, 75,704.34 and 30,989.85 is: 42,765.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,858.51 : 75,704.34 = 30,989.85 : x
  2. Step 2: Convert to fraction form
    54,858.51/75,704.34 = 30,989.85/x
  3. Step 3: Cross multiply
    54,858.51x = 75,704.34 × 30,989.85
  4. Step 4: Simplify right side
    54,858.51x = 2,346,066,140.95
  5. Step 5: Solve for x
    x = 2,346,066,140.95/54,858.51
  6. Step 6: Final answer
    x = 42,765.76

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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.