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Finding the Fourth Proportional to 53,953.60, 80,930.40 and 33,188.80

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Solution

The fourth proportional to 53,953.60, 80,930.40 and 33,188.80 is: 49,783.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,953.60 : 80,930.40 = 33,188.80 : x
  2. Step 2: Convert to fraction form
    53,953.60/80,930.40 = 33,188.80/x
  3. Step 3: Cross multiply
    53,953.60x = 80,930.40 × 33,188.80
  4. Step 4: Simplify right side
    53,953.60x = 2,685,982,859.52
  5. Step 5: Solve for x
    x = 2,685,982,859.52/53,953.60
  6. Step 6: Final answer
    x = 49,783.20

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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.