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Finding the Fourth Proportional to 81,104.84, 111,939.24 and 48,401.36

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Solution

The fourth proportional to 81,104.84, 111,939.24 and 48,401.36 is: 66,802.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,104.84 : 111,939.24 = 48,401.36 : x
  2. Step 2: Convert to fraction form
    81,104.84/111,939.24 = 48,401.36/x
  3. Step 3: Cross multiply
    81,104.84x = 111,939.24 × 48,401.36
  4. Step 4: Simplify right side
    81,104.84x = 5,418,011,453.37
  5. Step 5: Solve for x
    x = 5,418,011,453.37/81,104.84
  6. Step 6: Final answer
    x = 66,802.57

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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.