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Finding the Fourth Proportional to 71,710.33, 98,950.65 and 39,873.10

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Solution

The fourth proportional to 71,710.33, 98,950.65 and 39,873.10 is: 55,019.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,710.33 : 98,950.65 = 39,873.10 : x
  2. Step 2: Convert to fraction form
    71,710.33/98,950.65 = 39,873.10/x
  3. Step 3: Cross multiply
    71,710.33x = 98,950.65 × 39,873.10
  4. Step 4: Simplify right side
    71,710.33x = 3,945,469,162.52
  5. Step 5: Solve for x
    x = 3,945,469,162.52/71,710.33
  6. Step 6: Final answer
    x = 55,019.54

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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.