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Finding the Fourth Proportional to 85,659.05, 118,263.11 and 55,044.54

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Solution

The fourth proportional to 85,659.05, 118,263.11 and 55,044.54 is: 75,995.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,659.05 : 118,263.11 = 55,044.54 : x
  2. Step 2: Convert to fraction form
    85,659.05/118,263.11 = 55,044.54/x
  3. Step 3: Cross multiply
    85,659.05x = 118,263.11 × 55,044.54
  4. Step 4: Simplify right side
    85,659.05x = 6,509,738,213.70
  5. Step 5: Solve for x
    x = 6,509,738,213.70/85,659.05
  6. Step 6: Final answer
    x = 75,995.92

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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.