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Finding the Fourth Proportional to 37,919.80, 56,879.16 and 17,143.30

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Solution

The fourth proportional to 37,919.80, 56,879.16 and 17,143.30 is: 25,714.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,919.80 : 56,879.16 = 17,143.30 : x
  2. Step 2: Convert to fraction form
    37,919.80/56,879.16 = 17,143.30/x
  3. Step 3: Cross multiply
    37,919.80x = 56,879.16 × 17,143.30
  4. Step 4: Simplify right side
    37,919.80x = 975,096,503.63
  5. Step 5: Solve for x
    x = 975,096,503.63/37,919.80
  6. Step 6: Final answer
    x = 25,714.71

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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.