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Finding the Fourth Proportional to 57,740.55, 79,103.23 and 55,581.79

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Solution

The fourth proportional to 57,740.55, 79,103.23 and 55,581.79 is: 76,145.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,740.55 : 79,103.23 = 55,581.79 : x
  2. Step 2: Convert to fraction form
    57,740.55/79,103.23 = 55,581.79/x
  3. Step 3: Cross multiply
    57,740.55x = 79,103.23 × 55,581.79
  4. Step 4: Simplify right side
    57,740.55x = 4,396,699,239.26
  5. Step 5: Solve for x
    x = 4,396,699,239.26/57,740.55
  6. Step 6: Final answer
    x = 76,145.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.