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Finding the Fourth Proportional to 81,552.80, 122,246.58 and 55,260.20

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Solution

The fourth proportional to 81,552.80, 122,246.58 and 55,260.20 is: 82,834.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,552.80 : 122,246.58 = 55,260.20 : x
  2. Step 2: Convert to fraction form
    81,552.80/122,246.58 = 55,260.20/x
  3. Step 3: Cross multiply
    81,552.80x = 122,246.58 × 55,260.20
  4. Step 4: Simplify right side
    81,552.80x = 6,755,370,460.12
  5. Step 5: Solve for x
    x = 6,755,370,460.12/81,552.80
  6. Step 6: Final answer
    x = 82,834.32

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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.