Home / 41,919.78-57,820-28,467.68

Finding the Fourth Proportional to 41,919.78, 57,820 and 28,467.68

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Solution

The fourth proportional to 41,919.78, 57,820 and 28,467.68 is: 39,265.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,919.78 : 57,820 = 28,467.68 : x
  2. Step 2: Convert to fraction form
    41,919.78/57,820 = 28,467.68/x
  3. Step 3: Cross multiply
    41,919.78x = 57,820 × 28,467.68
  4. Step 4: Simplify right side
    41,919.78x = 1,646,001,257.60
  5. Step 5: Solve for x
    x = 1,646,001,257.60/41,919.78
  6. Step 6: Final answer
    x = 39,265.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.