Home / 72,144.06-108,221.52-21,539.09

Finding the Fourth Proportional to 72,144.06, 108,221.52 and 21,539.09

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Solution

The fourth proportional to 72,144.06, 108,221.52 and 21,539.09 is: 32,310.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,144.06 : 108,221.52 = 21,539.09 : x
  2. Step 2: Convert to fraction form
    72,144.06/108,221.52 = 21,539.09/x
  3. Step 3: Cross multiply
    72,144.06x = 108,221.52 × 21,539.09
  4. Step 4: Simplify right side
    72,144.06x = 2,330,992,518.11
  5. Step 5: Solve for x
    x = 2,330,992,518.11/72,144.06
  6. Step 6: Final answer
    x = 32,310.25

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1.5x scale

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.