Home / 55,203.06-82,816.89-20,142.72

Finding the Fourth Proportional to 55,203.06, 82,816.89 and 20,142.72

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Solution

The fourth proportional to 55,203.06, 82,816.89 and 20,142.72 is: 30,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,203.06 : 82,816.89 = 20,142.72 : x
  2. Step 2: Convert to fraction form
    55,203.06/82,816.89 = 20,142.72/x
  3. Step 3: Cross multiply
    55,203.06x = 82,816.89 × 20,142.72
  4. Step 4: Simplify right side
    55,203.06x = 1,668,157,426.54
  5. Step 5: Solve for x
    x = 1,668,157,426.54/55,203.06
  6. Step 6: Final answer
    x = 30,218.57

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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.