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Finding the Fourth Proportional to 78,757.89, 108,683.49 and 44,770.09

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Solution

The fourth proportional to 78,757.89, 108,683.49 and 44,770.09 is: 61,781.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,757.89 : 108,683.49 = 44,770.09 : x
  2. Step 2: Convert to fraction form
    78,757.89/108,683.49 = 44,770.09/x
  3. Step 3: Cross multiply
    78,757.89x = 108,683.49 × 44,770.09
  4. Step 4: Simplify right side
    78,757.89x = 4,865,769,628.81
  5. Step 5: Solve for x
    x = 4,865,769,628.81/78,757.89
  6. Step 6: Final answer
    x = 61,781.36

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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.