Home / 80,864.20-121,296.42-28,273.60

Finding the Fourth Proportional to 80,864.20, 121,296.42 and 28,273.60

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Solution

The fourth proportional to 80,864.20, 121,296.42 and 28,273.60 is: 42,410.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,864.20 : 121,296.42 = 28,273.60 : x
  2. Step 2: Convert to fraction form
    80,864.20/121,296.42 = 28,273.60/x
  3. Step 3: Cross multiply
    80,864.20x = 121,296.42 × 28,273.60
  4. Step 4: Simplify right side
    80,864.20x = 3,429,486,460.51
  5. Step 5: Solve for x
    x = 3,429,486,460.51/80,864.20
  6. Step 6: Final answer
    x = 42,410.44

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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.