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Finding the Fourth Proportional to 84,410.66, 126,553.11 and 28,217.52

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Solution

The fourth proportional to 84,410.66, 126,553.11 and 28,217.52 is: 42,305.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,410.66 : 126,553.11 = 28,217.52 : x
  2. Step 2: Convert to fraction form
    84,410.66/126,553.11 = 28,217.52/x
  3. Step 3: Cross multiply
    84,410.66x = 126,553.11 × 28,217.52
  4. Step 4: Simplify right side
    84,410.66x = 3,571,014,965.40
  5. Step 5: Solve for x
    x = 3,571,014,965.40/84,410.66
  6. Step 6: Final answer
    x = 42,305.26

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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.