Home / 55,176-82,780.32-31,819.20

Finding the Fourth Proportional to 55,176, 82,780.32 and 31,819.20

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Solution

The fourth proportional to 55,176, 82,780.32 and 31,819.20 is: 47,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,176 : 82,780.32 = 31,819.20 : x
  2. Step 2: Convert to fraction form
    55,176/82,780.32 = 31,819.20/x
  3. Step 3: Cross multiply
    55,176x = 82,780.32 × 31,819.20
  4. Step 4: Simplify right side
    55,176x = 2,634,003,558.14
  5. Step 5: Solve for x
    x = 2,634,003,558.14/55,176
  6. Step 6: Final answer
    x = 47,738.21

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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.