Home / 84,321.04-126,489-21,992.08

Finding the Fourth Proportional to 84,321.04, 126,489 and 21,992.08

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Solution

The fourth proportional to 84,321.04, 126,489 and 21,992.08 is: 32,990.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,321.04 : 126,489 = 21,992.08 : x
  2. Step 2: Convert to fraction form
    84,321.04/126,489 = 21,992.08/x
  3. Step 3: Cross multiply
    84,321.04x = 126,489 × 21,992.08
  4. Step 4: Simplify right side
    84,321.04x = 2,781,756,207.12
  5. Step 5: Solve for x
    x = 2,781,756,207.12/84,321.04
  6. Step 6: Final answer
    x = 32,990.06

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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.