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Finding the Fourth Proportional to 71,627.20, 107,440.80 and 49,076.80

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Solution

The fourth proportional to 71,627.20, 107,440.80 and 49,076.80 is: 73,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,627.20 : 107,440.80 = 49,076.80 : x
  2. Step 2: Convert to fraction form
    71,627.20/107,440.80 = 49,076.80/x
  3. Step 3: Cross multiply
    71,627.20x = 107,440.80 × 49,076.80
  4. Step 4: Simplify right side
    71,627.20x = 5,272,850,653.44
  5. Step 5: Solve for x
    x = 5,272,850,653.44/71,627.20
  6. Step 6: Final answer
    x = 73,615.20

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1.5x scale

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.