Home / 55,540.80-76,648.32-30,390.48

Finding the Fourth Proportional to 55,540.80, 76,648.32 and 30,390.48

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Solution

The fourth proportional to 55,540.80, 76,648.32 and 30,390.48 is: 41,939.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,540.80 : 76,648.32 = 30,390.48 : x
  2. Step 2: Convert to fraction form
    55,540.80/76,648.32 = 30,390.48/x
  3. Step 3: Cross multiply
    55,540.80x = 76,648.32 × 30,390.48
  4. Step 4: Simplify right side
    55,540.80x = 2,329,379,235.99
  5. Step 5: Solve for x
    x = 2,329,379,235.99/55,540.80
  6. Step 6: Final answer
    x = 41,939.97

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1.5x scale

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.