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Finding the Fourth Proportional to 78,772.80, 118,187.43 and 33,775.29

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Solution

The fourth proportional to 78,772.80, 118,187.43 and 33,775.29 is: 50,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,772.80 : 118,187.43 = 33,775.29 : x
  2. Step 2: Convert to fraction form
    78,772.80/118,187.43 = 33,775.29/x
  3. Step 3: Cross multiply
    78,772.80x = 118,187.43 × 33,775.29
  4. Step 4: Simplify right side
    78,772.80x = 3,991,814,722.60
  5. Step 5: Solve for x
    x = 3,991,814,722.60/78,772.80
  6. Step 6: Final answer
    x = 50,675.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.