Home / 81,107.11-121,664.01-27,835.69

Finding the Fourth Proportional to 81,107.11, 121,664.01 and 27,835.69

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Solution

The fourth proportional to 81,107.11, 121,664.01 and 27,835.69 is: 41,754.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,107.11 : 121,664.01 = 27,835.69 : x
  2. Step 2: Convert to fraction form
    81,107.11/121,664.01 = 27,835.69/x
  3. Step 3: Cross multiply
    81,107.11x = 121,664.01 × 27,835.69
  4. Step 4: Simplify right side
    81,107.11x = 3,386,601,666.52
  5. Step 5: Solve for x
    x = 3,386,601,666.52/81,107.11
  6. Step 6: Final answer
    x = 41,754.68

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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.