Home / 81,232.12-121,808.22-28,633.96

Finding the Fourth Proportional to 81,232.12, 121,808.22 and 28,633.96

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Solution

The fourth proportional to 81,232.12, 121,808.22 and 28,633.96 is: 42,936.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,232.12 : 121,808.22 = 28,633.96 : x
  2. Step 2: Convert to fraction form
    81,232.12/121,808.22 = 28,633.96/x
  3. Step 3: Cross multiply
    81,232.12x = 121,808.22 × 28,633.96
  4. Step 4: Simplify right side
    81,232.12x = 3,487,851,699.15
  5. Step 5: Solve for x
    x = 3,487,851,699.15/81,232.12
  6. Step 6: Final answer
    x = 42,936.85

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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.