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Finding the Fourth Proportional to 79,857.73, 110,148.41 and 64,751.03

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Solution

The fourth proportional to 79,857.73, 110,148.41 and 64,751.03 is: 89,311.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,857.73 : 110,148.41 = 64,751.03 : x
  2. Step 2: Convert to fraction form
    79,857.73/110,148.41 = 64,751.03/x
  3. Step 3: Cross multiply
    79,857.73x = 110,148.41 × 64,751.03
  4. Step 4: Simplify right side
    79,857.73x = 7,132,222,676.61
  5. Step 5: Solve for x
    x = 7,132,222,676.61/79,857.73
  6. Step 6: Final answer
    x = 89,311.62

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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.