Home / 55,811.58-77,019.75-30,660.54

Finding the Fourth Proportional to 55,811.58, 77,019.75 and 30,660.54

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Solution

The fourth proportional to 55,811.58, 77,019.75 and 30,660.54 is: 42,311.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,811.58 : 77,019.75 = 30,660.54 : x
  2. Step 2: Convert to fraction form
    55,811.58/77,019.75 = 30,660.54/x
  3. Step 3: Cross multiply
    55,811.58x = 77,019.75 × 30,660.54
  4. Step 4: Simplify right side
    55,811.58x = 2,361,467,125.67
  5. Step 5: Solve for x
    x = 2,361,467,125.67/55,811.58
  6. Step 6: Final answer
    x = 42,311.42

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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.