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Finding the Fourth Proportional to 87,601.46, 120,748.02 and 68,447.75

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Solution

The fourth proportional to 87,601.46, 120,748.02 and 68,447.75 is: 94,346.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,601.46 : 120,748.02 = 68,447.75 : x
  2. Step 2: Convert to fraction form
    87,601.46/120,748.02 = 68,447.75/x
  3. Step 3: Cross multiply
    87,601.46x = 120,748.02 × 68,447.75
  4. Step 4: Simplify right side
    87,601.46x = 8,264,930,285.96
  5. Step 5: Solve for x
    x = 8,264,930,285.96/87,601.46
  6. Step 6: Final answer
    x = 94,346.95

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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.