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Finding the Fourth Proportional to 85,651.58, 118,195.89 and 47,925.86

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Solution

The fourth proportional to 85,651.58, 118,195.89 and 47,925.86 is: 66,135.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,651.58 : 118,195.89 = 47,925.86 : x
  2. Step 2: Convert to fraction form
    85,651.58/118,195.89 = 47,925.86/x
  3. Step 3: Cross multiply
    85,651.58x = 118,195.89 × 47,925.86
  4. Step 4: Simplify right side
    85,651.58x = 5,664,639,676.72
  5. Step 5: Solve for x
    x = 5,664,639,676.72/85,651.58
  6. Step 6: Final answer
    x = 66,135.85

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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.