Home / 55,063.75-75,993.29-30,868.80

Finding the Fourth Proportional to 55,063.75, 75,993.29 and 30,868.80

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Solution

The fourth proportional to 55,063.75, 75,993.29 and 30,868.80 is: 42,601.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,063.75 : 75,993.29 = 30,868.80 : x
  2. Step 2: Convert to fraction form
    55,063.75/75,993.29 = 30,868.80/x
  3. Step 3: Cross multiply
    55,063.75x = 75,993.29 × 30,868.80
  4. Step 4: Simplify right side
    55,063.75x = 2,345,821,346.79
  5. Step 5: Solve for x
    x = 2,345,821,346.79/55,063.75
  6. Step 6: Final answer
    x = 42,601.92

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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.