Home / 72,115.72-108,173.56-27,145.52

Finding the Fourth Proportional to 72,115.72, 108,173.56 and 27,145.52

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Solution

The fourth proportional to 72,115.72, 108,173.56 and 27,145.52 is: 40,718.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,115.72 : 108,173.56 = 27,145.52 : x
  2. Step 2: Convert to fraction form
    72,115.72/108,173.56 = 27,145.52/x
  3. Step 3: Cross multiply
    72,115.72x = 108,173.56 × 27,145.52
  4. Step 4: Simplify right side
    72,115.72x = 2,936,427,536.45
  5. Step 5: Solve for x
    x = 2,936,427,536.45/72,115.72
  6. Step 6: Final answer
    x = 40,718.27

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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.