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Finding the Fourth Proportional to 80,654.40, 121,010.40 and 33,921.60

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Solution

The fourth proportional to 80,654.40, 121,010.40 and 33,921.60 is: 50,894.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,654.40 : 121,010.40 = 33,921.60 : x
  2. Step 2: Convert to fraction form
    80,654.40/121,010.40 = 33,921.60/x
  3. Step 3: Cross multiply
    80,654.40x = 121,010.40 × 33,921.60
  4. Step 4: Simplify right side
    80,654.40x = 4,104,866,384.64
  5. Step 5: Solve for x
    x = 4,104,866,384.64/80,654.40
  6. Step 6: Final answer
    x = 50,894.51

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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.