Home / 83,481.03-125,221.95-21,151.53

Finding the Fourth Proportional to 83,481.03, 125,221.95 and 21,151.53

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Solution

The fourth proportional to 83,481.03, 125,221.95 and 21,151.53 is: 31,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,481.03 : 125,221.95 = 21,151.53 : x
  2. Step 2: Convert to fraction form
    83,481.03/125,221.95 = 21,151.53/x
  3. Step 3: Cross multiply
    83,481.03x = 125,221.95 × 21,151.53
  4. Step 4: Simplify right side
    83,481.03x = 2,648,635,832.08
  5. Step 5: Solve for x
    x = 2,648,635,832.08/83,481.03
  6. Step 6: Final answer
    x = 31,727.40

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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.