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Finding the Fourth Proportional to 71,196.60, 98,255.94 and 40,985.64

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Solution

The fourth proportional to 71,196.60, 98,255.94 and 40,985.64 is: 56,562.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,196.60 : 98,255.94 = 40,985.64 : x
  2. Step 2: Convert to fraction form
    71,196.60/98,255.94 = 40,985.64/x
  3. Step 3: Cross multiply
    71,196.60x = 98,255.94 × 40,985.64
  4. Step 4: Simplify right side
    71,196.60x = 4,027,082,584.70
  5. Step 5: Solve for x
    x = 4,027,082,584.70/71,196.60
  6. Step 6: Final answer
    x = 56,562.85

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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.