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Finding the Fourth Proportional to 70,228.76, 96,891.94 and 39,992.64

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Solution

The fourth proportional to 70,228.76, 96,891.94 and 39,992.64 is: 55,176.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,228.76 : 96,891.94 = 39,992.64 : x
  2. Step 2: Convert to fraction form
    70,228.76/96,891.94 = 39,992.64/x
  3. Step 3: Cross multiply
    70,228.76x = 96,891.94 × 39,992.64
  4. Step 4: Simplify right side
    70,228.76x = 3,874,964,233.09
  5. Step 5: Solve for x
    x = 3,874,964,233.09/70,228.76
  6. Step 6: Final answer
    x = 55,176.32

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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.