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Finding the Fourth Proportional to 71,015.65, 98,002.11 and 39,185.68

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Solution

The fourth proportional to 71,015.65, 98,002.11 and 39,185.68 is: 54,076.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,015.65 : 98,002.11 = 39,185.68 : x
  2. Step 2: Convert to fraction form
    71,015.65/98,002.11 = 39,185.68/x
  3. Step 3: Cross multiply
    71,015.65x = 98,002.11 × 39,185.68
  4. Step 4: Simplify right side
    71,015.65x = 3,840,279,321.78
  5. Step 5: Solve for x
    x = 3,840,279,321.78/71,015.65
  6. Step 6: Final answer
    x = 54,076.52

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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.