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Finding the Fourth Proportional to 81,450.39, 112,401.39 and 49,619.29

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Solution

The fourth proportional to 81,450.39, 112,401.39 and 49,619.29 is: 68,474.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,450.39 : 112,401.39 = 49,619.29 : x
  2. Step 2: Convert to fraction form
    81,450.39/112,401.39 = 49,619.29/x
  3. Step 3: Cross multiply
    81,450.39x = 112,401.39 × 49,619.29
  4. Step 4: Simplify right side
    81,450.39x = 5,577,276,885.81
  5. Step 5: Solve for x
    x = 5,577,276,885.81/81,450.39
  6. Step 6: Final answer
    x = 68,474.53

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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.