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Finding the Fourth Proportional to 81,504.88, 122,246.92 and 31,550.79

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Solution

The fourth proportional to 81,504.88, 122,246.92 and 31,550.79 is: 47,322.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,504.88 : 122,246.92 = 31,550.79 : x
  2. Step 2: Convert to fraction form
    81,504.88/122,246.92 = 31,550.79/x
  3. Step 3: Cross multiply
    81,504.88x = 122,246.92 × 31,550.79
  4. Step 4: Simplify right side
    81,504.88x = 3,856,986,901.07
  5. Step 5: Solve for x
    x = 3,856,986,901.07/81,504.88
  6. Step 6: Final answer
    x = 47,322.16

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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.