Home / 81,451.71-122,196.04-28,861.18

Finding the Fourth Proportional to 81,451.71, 122,196.04 and 28,861.18

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Solution

The fourth proportional to 81,451.71, 122,196.04 and 28,861.18 is: 43,298.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,451.71 : 122,196.04 = 28,861.18 : x
  2. Step 2: Convert to fraction form
    81,451.71/122,196.04 = 28,861.18/x
  3. Step 3: Cross multiply
    81,451.71x = 122,196.04 × 28,861.18
  4. Step 4: Simplify right side
    81,451.71x = 3,526,721,528.08
  5. Step 5: Solve for x
    x = 3,526,721,528.08/81,451.71
  6. Step 6: Final answer
    x = 43,298.31

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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.