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Finding the Fourth Proportional to 70,028.75, 96,635.81 and 39,809.88

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Solution

The fourth proportional to 70,028.75, 96,635.81 and 39,809.88 is: 54,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,028.75 : 96,635.81 = 39,809.88 : x
  2. Step 2: Convert to fraction form
    70,028.75/96,635.81 = 39,809.88/x
  3. Step 3: Cross multiply
    70,028.75x = 96,635.81 × 39,809.88
  4. Step 4: Simplify right side
    70,028.75x = 3,847,059,999.80
  5. Step 5: Solve for x
    x = 3,847,059,999.80/70,028.75
  6. Step 6: Final answer
    x = 54,935.44

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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.