Home / 55,228.83-82,818.63-20,143.88

Finding the Fourth Proportional to 55,228.83, 82,818.63 and 20,143.88

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Solution

The fourth proportional to 55,228.83, 82,818.63 and 20,143.88 is: 30,206.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,228.83 : 82,818.63 = 20,143.88 : x
  2. Step 2: Convert to fraction form
    55,228.83/82,818.63 = 20,143.88/x
  3. Step 3: Cross multiply
    55,228.83x = 82,818.63 × 20,143.88
  4. Step 4: Simplify right side
    55,228.83x = 1,668,288,130.39
  5. Step 5: Solve for x
    x = 1,668,288,130.39/55,228.83
  6. Step 6: Final answer
    x = 30,206.83

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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.