Home / 81,511.28-122,243.55-27,470.07

Finding the Fourth Proportional to 81,511.28, 122,243.55 and 27,470.07

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Solution

The fourth proportional to 81,511.28, 122,243.55 and 27,470.07 is: 41,197.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,511.28 : 122,243.55 = 27,470.07 : x
  2. Step 2: Convert to fraction form
    81,511.28/122,243.55 = 27,470.07/x
  3. Step 3: Cross multiply
    81,511.28x = 122,243.55 × 27,470.07
  4. Step 4: Simplify right side
    81,511.28x = 3,358,039,265.29
  5. Step 5: Solve for x
    x = 3,358,039,265.29/81,511.28
  6. Step 6: Final answer
    x = 41,197.24

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1.5x scale

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.