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Finding the Fourth Proportional to 89,102.79, 122,965.90 and 50,872.68

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Solution

The fourth proportional to 89,102.79, 122,965.90 and 50,872.68 is: 70,206.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,102.79 : 122,965.90 = 50,872.68 : x
  2. Step 2: Convert to fraction form
    89,102.79/122,965.90 = 50,872.68/x
  3. Step 3: Cross multiply
    89,102.79x = 122,965.90 × 50,872.68
  4. Step 4: Simplify right side
    89,102.79x = 6,255,604,754.43
  5. Step 5: Solve for x
    x = 6,255,604,754.43/89,102.79
  6. Step 6: Final answer
    x = 70,206.61

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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.