Home / 81,106.11-121,662.51-27,834.69

Finding the Fourth Proportional to 81,106.11, 121,662.51 and 27,834.69

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Solution

The fourth proportional to 81,106.11, 121,662.51 and 27,834.69 is: 41,753.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,106.11 : 121,662.51 = 27,834.69 : x
  2. Step 2: Convert to fraction form
    81,106.11/121,662.51 = 27,834.69/x
  3. Step 3: Cross multiply
    81,106.11x = 121,662.51 × 27,834.69
  4. Step 4: Simplify right side
    81,106.11x = 3,386,438,758.90
  5. Step 5: Solve for x
    x = 3,386,438,758.90/81,106.11
  6. Step 6: Final answer
    x = 41,753.19

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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.