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Finding the Fourth Proportional to 85,752.92, 118,343.25 and 51,760.87

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Solution

The fourth proportional to 85,752.92, 118,343.25 and 51,760.87 is: 71,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,752.92 : 118,343.25 = 51,760.87 : x
  2. Step 2: Convert to fraction form
    85,752.92/118,343.25 = 51,760.87/x
  3. Step 3: Cross multiply
    85,752.92x = 118,343.25 × 51,760.87
  4. Step 4: Simplify right side
    85,752.92x = 6,125,548,986.91
  5. Step 5: Solve for x
    x = 6,125,548,986.91/85,752.92
  6. Step 6: Final answer
    x = 71,432.54

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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.