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Finding the Fourth Proportional to 78,758.89, 108,684.87 and 44,771.09

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Solution

The fourth proportional to 78,758.89, 108,684.87 and 44,771.09 is: 61,782.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,758.89 : 108,684.87 = 44,771.09 : x
  2. Step 2: Convert to fraction form
    78,758.89/108,684.87 = 44,771.09/x
  3. Step 3: Cross multiply
    78,758.89x = 108,684.87 × 44,771.09
  4. Step 4: Simplify right side
    78,758.89x = 4,865,940,096.41
  5. Step 5: Solve for x
    x = 4,865,940,096.41/78,758.89
  6. Step 6: Final answer
    x = 61,782.74

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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.