Home / 99,941.76-137,919.99-54,619.73

Finding the Fourth Proportional to 99,941.76, 137,919.99 and 54,619.73

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Solution

The fourth proportional to 99,941.76, 137,919.99 and 54,619.73 is: 75,375.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,941.76 : 137,919.99 = 54,619.73 : x
  2. Step 2: Convert to fraction form
    99,941.76/137,919.99 = 54,619.73/x
  3. Step 3: Cross multiply
    99,941.76x = 137,919.99 × 54,619.73
  4. Step 4: Simplify right side
    99,941.76x = 7,533,151,652.70
  5. Step 5: Solve for x
    x = 7,533,151,652.70/99,941.76
  6. Step 6: Final answer
    x = 75,375.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.