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Finding the Fourth Proportional to 85,750.92, 118,340.49 and 51,758.87

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Solution

The fourth proportional to 85,750.92, 118,340.49 and 51,758.87 is: 71,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,750.92 : 118,340.49 = 51,758.87 : x
  2. Step 2: Convert to fraction form
    85,750.92/118,340.49 = 51,758.87/x
  3. Step 3: Cross multiply
    85,750.92x = 118,340.49 × 51,758.87
  4. Step 4: Simplify right side
    85,750.92x = 6,125,169,640.04
  5. Step 5: Solve for x
    x = 6,125,169,640.04/85,750.92
  6. Step 6: Final answer
    x = 71,429.78

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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.