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Finding the Fourth Proportional to 109,377.80, 150,944.50 and 61,628.52

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Solution

The fourth proportional to 109,377.80, 150,944.50 and 61,628.52 is: 85,049.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,377.80 : 150,944.50 = 61,628.52 : x
  2. Step 2: Convert to fraction form
    109,377.80/150,944.50 = 61,628.52/x
  3. Step 3: Cross multiply
    109,377.80x = 150,944.50 × 61,628.52
  4. Step 4: Simplify right side
    109,377.80x = 9,302,486,137.14
  5. Step 5: Solve for x
    x = 9,302,486,137.14/109,377.80
  6. Step 6: Final answer
    x = 85,049.12

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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.