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Finding the Fourth Proportional to 118,627.80, 177,942.48 and 39,748.20

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Solution

The fourth proportional to 118,627.80, 177,942.48 and 39,748.20 is: 59,622.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,627.80 : 177,942.48 = 39,748.20 : x
  2. Step 2: Convert to fraction form
    118,627.80/177,942.48 = 39,748.20/x
  3. Step 3: Cross multiply
    118,627.80x = 177,942.48 × 39,748.20
  4. Step 4: Simplify right side
    118,627.80x = 7,072,893,283.54
  5. Step 5: Solve for x
    x = 7,072,893,283.54/118,627.80
  6. Step 6: Final answer
    x = 59,622.56

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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.