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Finding the Fourth Proportional to 88,171.64, 121,676.83 and 47,885.41

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Solution

The fourth proportional to 88,171.64, 121,676.83 and 47,885.41 is: 66,081.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,171.64 : 121,676.83 = 47,885.41 : x
  2. Step 2: Convert to fraction form
    88,171.64/121,676.83 = 47,885.41/x
  3. Step 3: Cross multiply
    88,171.64x = 121,676.83 × 47,885.41
  4. Step 4: Simplify right side
    88,171.64x = 5,826,544,892.05
  5. Step 5: Solve for x
    x = 5,826,544,892.05/88,171.64
  6. Step 6: Final answer
    x = 66,081.85

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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.