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Finding the Fourth Proportional to 85,508.78, 118,000.37 and 47,269.94

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Solution

The fourth proportional to 85,508.78, 118,000.37 and 47,269.94 is: 65,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,508.78 : 118,000.37 = 47,269.94 : x
  2. Step 2: Convert to fraction form
    85,508.78/118,000.37 = 47,269.94/x
  3. Step 3: Cross multiply
    85,508.78x = 118,000.37 × 47,269.94
  4. Step 4: Simplify right side
    85,508.78x = 5,577,869,819.88
  5. Step 5: Solve for x
    x = 5,577,869,819.88/85,508.78
  6. Step 6: Final answer
    x = 65,231.55

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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.