Home / 81,700.11-122,560.61-29,114.91

Finding the Fourth Proportional to 81,700.11, 122,560.61 and 29,114.91

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Solution

The fourth proportional to 81,700.11, 122,560.61 and 29,114.91 is: 43,676.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,700.11 : 122,560.61 = 29,114.91 : x
  2. Step 2: Convert to fraction form
    81,700.11/122,560.61 = 29,114.91/x
  3. Step 3: Cross multiply
    81,700.11x = 122,560.61 × 29,114.91
  4. Step 4: Simplify right side
    81,700.11x = 3,568,340,984.12
  5. Step 5: Solve for x
    x = 3,568,340,984.12/81,700.11
  6. Step 6: Final answer
    x = 43,676.09

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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.