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Finding the Fourth Proportional to 71,287.82, 98,375.71 and 39,021.65

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Solution

The fourth proportional to 71,287.82, 98,375.71 and 39,021.65 is: 53,849.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,287.82 : 98,375.71 = 39,021.65 : x
  2. Step 2: Convert to fraction form
    71,287.82/98,375.71 = 39,021.65/x
  3. Step 3: Cross multiply
    71,287.82x = 98,375.71 × 39,021.65
  4. Step 4: Simplify right side
    71,287.82x = 3,838,782,653.45
  5. Step 5: Solve for x
    x = 3,838,782,653.45/71,287.82
  6. Step 6: Final answer
    x = 53,849.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.