Home / 82,138.55-123,214.74-25,977.41

Finding the Fourth Proportional to 82,138.55, 123,214.74 and 25,977.41

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Solution

The fourth proportional to 82,138.55, 123,214.74 and 25,977.41 is: 38,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,138.55 : 123,214.74 = 25,977.41 : x
  2. Step 2: Convert to fraction form
    82,138.55/123,214.74 = 25,977.41/x
  3. Step 3: Cross multiply
    82,138.55x = 123,214.74 × 25,977.41
  4. Step 4: Simplify right side
    82,138.55x = 3,200,799,819.02
  5. Step 5: Solve for x
    x = 3,200,799,819.02/82,138.55
  6. Step 6: Final answer
    x = 38,968.30

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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.