Home / 51,171.08-76,778.88-17,915

Finding the Fourth Proportional to 51,171.08, 76,778.88 and 17,915

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Solution

The fourth proportional to 51,171.08, 76,778.88 and 17,915 is: 26,880.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,171.08 : 76,778.88 = 17,915 : x
  2. Step 2: Convert to fraction form
    51,171.08/76,778.88 = 17,915/x
  3. Step 3: Cross multiply
    51,171.08x = 76,778.88 × 17,915
  4. Step 4: Simplify right side
    51,171.08x = 1,375,493,635.20
  5. Step 5: Solve for x
    x = 1,375,493,635.20/51,171.08
  6. Step 6: Final answer
    x = 26,880.29

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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.