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Finding the Fourth Proportional to 53,609.60, 80,414.40 and 33,780.80

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Solution

The fourth proportional to 53,609.60, 80,414.40 and 33,780.80 is: 50,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,609.60 : 80,414.40 = 33,780.80 : x
  2. Step 2: Convert to fraction form
    53,609.60/80,414.40 = 33,780.80/x
  3. Step 3: Cross multiply
    53,609.60x = 80,414.40 × 33,780.80
  4. Step 4: Simplify right side
    53,609.60x = 2,716,462,763.52
  5. Step 5: Solve for x
    x = 2,716,462,763.52/53,609.60
  6. Step 6: Final answer
    x = 50,671.20

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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.