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Finding the Fourth Proportional to 84,537.84, 126,808 and 40,169.12

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Solution

The fourth proportional to 84,537.84, 126,808 and 40,169.12 is: 60,254.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,537.84 : 126,808 = 40,169.12 : x
  2. Step 2: Convert to fraction form
    84,537.84/126,808 = 40,169.12/x
  3. Step 3: Cross multiply
    84,537.84x = 126,808 × 40,169.12
  4. Step 4: Simplify right side
    84,537.84x = 5,093,765,768.96
  5. Step 5: Solve for x
    x = 5,093,765,768.96/84,537.84
  6. Step 6: Final answer
    x = 60,254.27

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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.