Home / 81,359.50-122,225.94-57,725.32

Finding the Fourth Proportional to 81,359.50, 122,225.94 and 57,725.32

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Solution

The fourth proportional to 81,359.50, 122,225.94 and 57,725.32 is: 86,720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,359.50 : 122,225.94 = 57,725.32 : x
  2. Step 2: Convert to fraction form
    81,359.50/122,225.94 = 57,725.32/x
  3. Step 3: Cross multiply
    81,359.50x = 122,225.94 × 57,725.32
  4. Step 4: Simplify right side
    81,359.50x = 7,055,531,498.80
  5. Step 5: Solve for x
    x = 7,055,531,498.80/81,359.50
  6. Step 6: Final answer
    x = 86,720.44

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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.