Home / 81,097.24-121,652.37-28,518.52

Finding the Fourth Proportional to 81,097.24, 121,652.37 and 28,518.52

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Solution

The fourth proportional to 81,097.24, 121,652.37 and 28,518.52 is: 42,780.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,097.24 : 121,652.37 = 28,518.52 : x
  2. Step 2: Convert to fraction form
    81,097.24/121,652.37 = 28,518.52/x
  3. Step 3: Cross multiply
    81,097.24x = 121,652.37 × 28,518.52
  4. Step 4: Simplify right side
    81,097.24x = 3,469,345,546.89
  5. Step 5: Solve for x
    x = 3,469,345,546.89/81,097.24
  6. Step 6: Final answer
    x = 42,780.07

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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.