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Finding the Fourth Proportional to 89,620.62, 123,672.21 and 49,333.56

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Solution

The fourth proportional to 89,620.62, 123,672.21 and 49,333.56 is: 68,077.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,620.62 : 123,672.21 = 49,333.56 : x
  2. Step 2: Convert to fraction form
    89,620.62/123,672.21 = 49,333.56/x
  3. Step 3: Cross multiply
    89,620.62x = 123,672.21 × 49,333.56
  4. Step 4: Simplify right side
    89,620.62x = 6,101,190,392.37
  5. Step 5: Solve for x
    x = 6,101,190,392.37/89,620.62
  6. Step 6: Final answer
    x = 68,077.98

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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.