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Finding the Fourth Proportional to 78,845.44, 118,274.56 and 39,362.56

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Solution

The fourth proportional to 78,845.44, 118,274.56 and 39,362.56 is: 59,047.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,845.44 : 118,274.56 = 39,362.56 : x
  2. Step 2: Convert to fraction form
    78,845.44/118,274.56 = 39,362.56/x
  3. Step 3: Cross multiply
    78,845.44x = 118,274.56 × 39,362.56
  4. Step 4: Simplify right side
    78,845.44x = 4,655,589,464.47
  5. Step 5: Solve for x
    x = 4,655,589,464.47/78,845.44
  6. Step 6: Final answer
    x = 59,047.04

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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.