Home / 55,211.57-82,822.61-20,142.89

Finding the Fourth Proportional to 55,211.57, 82,822.61 and 20,142.89

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Solution

The fourth proportional to 55,211.57, 82,822.61 and 20,142.89 is: 30,216.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,211.57 : 82,822.61 = 20,142.89 : x
  2. Step 2: Convert to fraction form
    55,211.57/82,822.61 = 20,142.89/x
  3. Step 3: Cross multiply
    55,211.57x = 82,822.61 × 20,142.89
  4. Step 4: Simplify right side
    55,211.57x = 1,668,286,358.99
  5. Step 5: Solve for x
    x = 1,668,286,358.99/55,211.57
  6. Step 6: Final answer
    x = 30,216.25

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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.