Home / 81,206.20-121,830.02-33,805.55

Finding the Fourth Proportional to 81,206.20, 121,830.02 and 33,805.55

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Solution

The fourth proportional to 81,206.20, 121,830.02 and 33,805.55 is: 50,716.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,206.20 : 121,830.02 = 33,805.55 : x
  2. Step 2: Convert to fraction form
    81,206.20/121,830.02 = 33,805.55/x
  3. Step 3: Cross multiply
    81,206.20x = 121,830.02 × 33,805.55
  4. Step 4: Simplify right side
    81,206.20x = 4,118,531,285.09
  5. Step 5: Solve for x
    x = 4,118,531,285.09/81,206.20
  6. Step 6: Final answer
    x = 50,716.96

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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.