Home / 81,612.08-122,163.72-62,843.36

Finding the Fourth Proportional to 81,612.08, 122,163.72 and 62,843.36

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Solution

The fourth proportional to 81,612.08, 122,163.72 and 62,843.36 is: 94,069.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,612.08 : 122,163.72 = 62,843.36 : x
  2. Step 2: Convert to fraction form
    81,612.08/122,163.72 = 62,843.36/x
  3. Step 3: Cross multiply
    81,612.08x = 122,163.72 × 62,843.36
  4. Step 4: Simplify right side
    81,612.08x = 7,677,178,634.90
  5. Step 5: Solve for x
    x = 7,677,178,634.90/81,612.08
  6. Step 6: Final answer
    x = 94,069.15

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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.