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Finding the Fourth Proportional to 81,643.48, 122,510.58 and 44,203

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Solution

The fourth proportional to 81,643.48, 122,510.58 and 44,203 is: 66,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,643.48 : 122,510.58 = 44,203 : x
  2. Step 2: Convert to fraction form
    81,643.48/122,510.58 = 44,203/x
  3. Step 3: Cross multiply
    81,643.48x = 122,510.58 × 44,203
  4. Step 4: Simplify right side
    81,643.48x = 5,415,335,167.74
  5. Step 5: Solve for x
    x = 5,415,335,167.74/81,643.48
  6. Step 6: Final answer
    x = 66,329.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.