Home / 81,275.86-121,882.33-27,957.75

Finding the Fourth Proportional to 81,275.86, 121,882.33 and 27,957.75

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Solution

The fourth proportional to 81,275.86, 121,882.33 and 27,957.75 is: 41,925.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,275.86 : 121,882.33 = 27,957.75 : x
  2. Step 2: Convert to fraction form
    81,275.86/121,882.33 = 27,957.75/x
  3. Step 3: Cross multiply
    81,275.86x = 121,882.33 × 27,957.75
  4. Step 4: Simplify right side
    81,275.86x = 3,407,555,711.56
  5. Step 5: Solve for x
    x = 3,407,555,711.56/81,275.86
  6. Step 6: Final answer
    x = 41,925.80

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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.