Home / 55,128.60-82,628.10-28,819.80

Finding the Fourth Proportional to 55,128.60, 82,628.10 and 28,819.80

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Solution

The fourth proportional to 55,128.60, 82,628.10 and 28,819.80 is: 43,195.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,128.60 : 82,628.10 = 28,819.80 : x
  2. Step 2: Convert to fraction form
    55,128.60/82,628.10 = 28,819.80/x
  3. Step 3: Cross multiply
    55,128.60x = 82,628.10 × 28,819.80
  4. Step 4: Simplify right side
    55,128.60x = 2,381,325,316.38
  5. Step 5: Solve for x
    x = 2,381,325,316.38/55,128.60
  6. Step 6: Final answer
    x = 43,195.82

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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.