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Finding the Fourth Proportional to 70,256.80, 96,956.88 and 40,046.64

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Solution

The fourth proportional to 70,256.80, 96,956.88 and 40,046.64 is: 55,265.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,256.80 : 96,956.88 = 40,046.64 : x
  2. Step 2: Convert to fraction form
    70,256.80/96,956.88 = 40,046.64/x
  3. Step 3: Cross multiply
    70,256.80x = 96,956.88 × 40,046.64
  4. Step 4: Simplify right side
    70,256.80x = 3,882,797,268.88
  5. Step 5: Solve for x
    x = 3,882,797,268.88/70,256.80
  6. Step 6: Final answer
    x = 55,265.79

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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.