Home / 57,923-79,890-40,047.92

Finding the Fourth Proportional to 57,923, 79,890 and 40,047.92

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Solution

The fourth proportional to 57,923, 79,890 and 40,047.92 is: 55,235.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,923 : 79,890 = 40,047.92 : x
  2. Step 2: Convert to fraction form
    57,923/79,890 = 40,047.92/x
  3. Step 3: Cross multiply
    57,923x = 79,890 × 40,047.92
  4. Step 4: Simplify right side
    57,923x = 3,199,428,328.80
  5. Step 5: Solve for x
    x = 3,199,428,328.80/57,923
  6. Step 6: Final answer
    x = 55,235.89

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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.