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Finding the Fourth Proportional to 70,197.84, 96,879.33 and 39,976.56

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Solution

The fourth proportional to 70,197.84, 96,879.33 and 39,976.56 is: 55,171.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,197.84 : 96,879.33 = 39,976.56 : x
  2. Step 2: Convert to fraction form
    70,197.84/96,879.33 = 39,976.56/x
  3. Step 3: Cross multiply
    70,197.84x = 96,879.33 × 39,976.56
  4. Step 4: Simplify right side
    70,197.84x = 3,872,902,348.50
  5. Step 5: Solve for x
    x = 3,872,902,348.50/70,197.84
  6. Step 6: Final answer
    x = 55,171.25

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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.