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Finding the Fourth Proportional to 81,102.84, 111,922.47 and 45,293.28

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Solution

The fourth proportional to 81,102.84, 111,922.47 and 45,293.28 is: 62,505.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,102.84 : 111,922.47 = 45,293.28 : x
  2. Step 2: Convert to fraction form
    81,102.84/111,922.47 = 45,293.28/x
  3. Step 3: Cross multiply
    81,102.84x = 111,922.47 × 45,293.28
  4. Step 4: Simplify right side
    81,102.84x = 5,069,335,772.00
  5. Step 5: Solve for x
    x = 5,069,335,772.00/81,102.84
  6. Step 6: Final answer
    x = 62,505.03

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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.