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Finding the Fourth Proportional to 81,450.52, 112,401.56 and 49,619.41

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Solution

The fourth proportional to 81,450.52, 112,401.56 and 49,619.41 is: 68,474.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,450.52 : 112,401.56 = 49,619.41 : x
  2. Step 2: Convert to fraction form
    81,450.52/112,401.56 = 49,619.41/x
  3. Step 3: Cross multiply
    81,450.52x = 112,401.56 × 49,619.41
  4. Step 4: Simplify right side
    81,450.52x = 5,577,299,495.33
  5. Step 5: Solve for x
    x = 5,577,299,495.33/81,450.52
  6. Step 6: Final answer
    x = 68,474.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.