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Finding the Fourth Proportional to 71,979.03, 107,999.73 and 38,660.22

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Solution

The fourth proportional to 71,979.03, 107,999.73 and 38,660.22 is: 58,007.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,979.03 : 107,999.73 = 38,660.22 : x
  2. Step 2: Convert to fraction form
    71,979.03/107,999.73 = 38,660.22/x
  3. Step 3: Cross multiply
    71,979.03x = 107,999.73 × 38,660.22
  4. Step 4: Simplify right side
    71,979.03x = 4,175,293,321.74
  5. Step 5: Solve for x
    x = 4,175,293,321.74/71,979.03
  6. Step 6: Final answer
    x = 58,007.08

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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.