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Finding the Fourth Proportional to 53,149.96, 79,731.90 and 18,080.20

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Solution

The fourth proportional to 53,149.96, 79,731.90 and 18,080.20 is: 27,122.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,149.96 : 79,731.90 = 18,080.20 : x
  2. Step 2: Convert to fraction form
    53,149.96/79,731.90 = 18,080.20/x
  3. Step 3: Cross multiply
    53,149.96x = 79,731.90 × 18,080.20
  4. Step 4: Simplify right side
    53,149.96x = 1,441,568,698.38
  5. Step 5: Solve for x
    x = 1,441,568,698.38/53,149.96
  6. Step 6: Final answer
    x = 27,122.67

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1.5x scale

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.