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Finding the Fourth Proportional to 84,637.88, 126,969.13 and 45,173.47

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Solution

The fourth proportional to 84,637.88, 126,969.13 and 45,173.47 is: 67,766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,637.88 : 126,969.13 = 45,173.47 : x
  2. Step 2: Convert to fraction form
    84,637.88/126,969.13 = 45,173.47/x
  3. Step 3: Cross multiply
    84,637.88x = 126,969.13 × 45,173.47
  4. Step 4: Simplify right side
    84,637.88x = 5,735,636,184.98
  5. Step 5: Solve for x
    x = 5,735,636,184.98/84,637.88
  6. Step 6: Final answer
    x = 67,766.78

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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.