Home / 80,801.60-121,105.20-41,338.40

Finding the Fourth Proportional to 80,801.60, 121,105.20 and 41,338.40

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Solution

The fourth proportional to 80,801.60, 121,105.20 and 41,338.40 is: 61,957.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,801.60 : 121,105.20 = 41,338.40 : x
  2. Step 2: Convert to fraction form
    80,801.60/121,105.20 = 41,338.40/x
  3. Step 3: Cross multiply
    80,801.60x = 121,105.20 × 41,338.40
  4. Step 4: Simplify right side
    80,801.60x = 5,006,295,199.68
  5. Step 5: Solve for x
    x = 5,006,295,199.68/80,801.60
  6. Step 6: Final answer
    x = 61,957.87

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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.