Home / 80,990.35-121,488.37-21,827.43

Finding the Fourth Proportional to 80,990.35, 121,488.37 and 21,827.43

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Solution

The fourth proportional to 80,990.35, 121,488.37 and 21,827.43 is: 32,741.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,990.35 : 121,488.37 = 21,827.43 : x
  2. Step 2: Convert to fraction form
    80,990.35/121,488.37 = 21,827.43/x
  3. Step 3: Cross multiply
    80,990.35x = 121,488.37 × 21,827.43
  4. Step 4: Simplify right side
    80,990.35x = 2,651,778,837.42
  5. Step 5: Solve for x
    x = 2,651,778,837.42/80,990.35
  6. Step 6: Final answer
    x = 32,741.91

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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.