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Finding the Fourth Proportional to 70,279.92, 96,992.96 and 38,453.60

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Solution

The fourth proportional to 70,279.92, 96,992.96 and 38,453.60 is: 53,069.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,279.92 : 96,992.96 = 38,453.60 : x
  2. Step 2: Convert to fraction form
    70,279.92/96,992.96 = 38,453.60/x
  3. Step 3: Cross multiply
    70,279.92x = 96,992.96 × 38,453.60
  4. Step 4: Simplify right side
    70,279.92x = 3,729,728,536.87
  5. Step 5: Solve for x
    x = 3,729,728,536.87/70,279.92
  6. Step 6: Final answer
    x = 53,069.62

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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.