Home / 85,917.20-128,877.96-33,338.48

Finding the Fourth Proportional to 85,917.20, 128,877.96 and 33,338.48

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Solution

The fourth proportional to 85,917.20, 128,877.96 and 33,338.48 is: 50,008.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,917.20 : 128,877.96 = 33,338.48 : x
  2. Step 2: Convert to fraction form
    85,917.20/128,877.96 = 33,338.48/x
  3. Step 3: Cross multiply
    85,917.20x = 128,877.96 × 33,338.48
  4. Step 4: Simplify right side
    85,917.20x = 4,296,595,291.90
  5. Step 5: Solve for x
    x = 4,296,595,291.90/85,917.20
  6. Step 6: Final answer
    x = 50,008.56

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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.