Home / 81,320.58-121,968.54-22,160.97

Finding the Fourth Proportional to 81,320.58, 121,968.54 and 22,160.97

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Solution

The fourth proportional to 81,320.58, 121,968.54 and 22,160.97 is: 33,238.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,320.58 : 121,968.54 = 22,160.97 : x
  2. Step 2: Convert to fraction form
    81,320.58/121,968.54 = 22,160.97/x
  3. Step 3: Cross multiply
    81,320.58x = 121,968.54 × 22,160.97
  4. Step 4: Simplify right side
    81,320.58x = 2,702,941,155.88
  5. Step 5: Solve for x
    x = 2,702,941,155.88/81,320.58
  6. Step 6: Final answer
    x = 33,238.09

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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.