Home / 55,842.16-76,982.48-39,920.80

Finding the Fourth Proportional to 55,842.16, 76,982.48 and 39,920.80

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Solution

The fourth proportional to 55,842.16, 76,982.48 and 39,920.80 is: 55,033.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,842.16 : 76,982.48 = 39,920.80 : x
  2. Step 2: Convert to fraction form
    55,842.16/76,982.48 = 39,920.80/x
  3. Step 3: Cross multiply
    55,842.16x = 76,982.48 × 39,920.80
  4. Step 4: Simplify right side
    55,842.16x = 3,073,202,187.58
  5. Step 5: Solve for x
    x = 3,073,202,187.58/55,842.16
  6. Step 6: Final answer
    x = 55,033.73

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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.