Home / 81,327.65-121,961.30-28,004.74

Finding the Fourth Proportional to 81,327.65, 121,961.30 and 28,004.74

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Solution

The fourth proportional to 81,327.65, 121,961.30 and 28,004.74 is: 41,996.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,327.65 : 121,961.30 = 28,004.74 : x
  2. Step 2: Convert to fraction form
    81,327.65/121,961.30 = 28,004.74/x
  3. Step 3: Cross multiply
    81,327.65x = 121,961.30 × 28,004.74
  4. Step 4: Simplify right side
    81,327.65x = 3,415,494,051.64
  5. Step 5: Solve for x
    x = 3,415,494,051.64/81,327.65
  6. Step 6: Final answer
    x = 41,996.72

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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.