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Finding the Fourth Proportional to 99,556.85, 137,388.39 and 54,844.85

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Solution

The fourth proportional to 99,556.85, 137,388.39 and 54,844.85 is: 75,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,556.85 : 137,388.39 = 54,844.85 : x
  2. Step 2: Convert to fraction form
    99,556.85/137,388.39 = 54,844.85/x
  3. Step 3: Cross multiply
    99,556.85x = 137,388.39 × 54,844.85
  4. Step 4: Simplify right side
    99,556.85x = 7,535,044,954.35
  5. Step 5: Solve for x
    x = 7,535,044,954.35/99,556.85
  6. Step 6: Final answer
    x = 75,685.86

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1.5x scale

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.