Home / 40,078.80-55,542.24-39,515.04

Finding the Fourth Proportional to 40,078.80, 55,542.24 and 39,515.04

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Solution

The fourth proportional to 40,078.80, 55,542.24 and 39,515.04 is: 54,760.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,078.80 : 55,542.24 = 39,515.04 : x
  2. Step 2: Convert to fraction form
    40,078.80/55,542.24 = 39,515.04/x
  3. Step 3: Cross multiply
    40,078.80x = 55,542.24 × 39,515.04
  4. Step 4: Simplify right side
    40,078.80x = 2,194,753,835.29
  5. Step 5: Solve for x
    x = 2,194,753,835.29/40,078.80
  6. Step 6: Final answer
    x = 54,760.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.