Home / 55,542.12-83,321.09-20,479.05

Finding the Fourth Proportional to 55,542.12, 83,321.09 and 20,479.05

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Solution

The fourth proportional to 55,542.12, 83,321.09 and 20,479.05 is: 30,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,542.12 : 83,321.09 = 20,479.05 : x
  2. Step 2: Convert to fraction form
    55,542.12/83,321.09 = 20,479.05/x
  3. Step 3: Cross multiply
    55,542.12x = 83,321.09 × 20,479.05
  4. Step 4: Simplify right side
    55,542.12x = 1,706,336,768.16
  5. Step 5: Solve for x
    x = 1,706,336,768.16/55,542.12
  6. Step 6: Final answer
    x = 30,721.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.