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Finding the Fourth Proportional to 81,119.84, 111,944.20 and 45,310.36

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Solution

The fourth proportional to 81,119.84, 111,944.20 and 45,310.36 is: 62,527.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,119.84 : 111,944.20 = 45,310.36 : x
  2. Step 2: Convert to fraction form
    81,119.84/111,944.20 = 45,310.36/x
  3. Step 3: Cross multiply
    81,119.84x = 111,944.20 × 45,310.36
  4. Step 4: Simplify right side
    81,119.84x = 5,072,232,001.91
  5. Step 5: Solve for x
    x = 5,072,232,001.91/81,119.84
  6. Step 6: Final answer
    x = 62,527.64

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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.