Home / 85,944.52-128,911.58-51,105.88

Finding the Fourth Proportional to 85,944.52, 128,911.58 and 51,105.88

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Solution

The fourth proportional to 85,944.52, 128,911.58 and 51,105.88 is: 76,655.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,944.52 : 128,911.58 = 51,105.88 : x
  2. Step 2: Convert to fraction form
    85,944.52/128,911.58 = 51,105.88/x
  3. Step 3: Cross multiply
    85,944.52x = 128,911.58 × 51,105.88
  4. Step 4: Simplify right side
    85,944.52x = 6,588,139,738.09
  5. Step 5: Solve for x
    x = 6,588,139,738.09/85,944.52
  6. Step 6: Final answer
    x = 76,655.73

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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.