Home / 85,434.08-128,163.33-26,274.69

Finding the Fourth Proportional to 85,434.08, 128,163.33 and 26,274.69

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Solution

The fourth proportional to 85,434.08, 128,163.33 and 26,274.69 is: 39,415.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,434.08 : 128,163.33 = 26,274.69 : x
  2. Step 2: Convert to fraction form
    85,434.08/128,163.33 = 26,274.69/x
  3. Step 3: Cross multiply
    85,434.08x = 128,163.33 × 26,274.69
  4. Step 4: Simplify right side
    85,434.08x = 3,367,451,765.12
  5. Step 5: Solve for x
    x = 3,367,451,765.12/85,434.08
  6. Step 6: Final answer
    x = 39,415.79

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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.