Home / 71,922.06-107,883-19,331.55

Finding the Fourth Proportional to 71,922.06, 107,883 and 19,331.55

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Solution

The fourth proportional to 71,922.06, 107,883 and 19,331.55 is: 28,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,922.06 : 107,883 = 19,331.55 : x
  2. Step 2: Convert to fraction form
    71,922.06/107,883 = 19,331.55/x
  3. Step 3: Cross multiply
    71,922.06x = 107,883 × 19,331.55
  4. Step 4: Simplify right side
    71,922.06x = 2,085,545,608.65
  5. Step 5: Solve for x
    x = 2,085,545,608.65/71,922.06
  6. Step 6: Final answer
    x = 28,997.30

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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.