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Finding the Fourth Proportional to 68,743.47, 103,113.32 and 21,995.67

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Solution

The fourth proportional to 68,743.47, 103,113.32 and 21,995.67 is: 32,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,743.47 : 103,113.32 = 21,995.67 : x
  2. Step 2: Convert to fraction form
    68,743.47/103,113.32 = 21,995.67/x
  3. Step 3: Cross multiply
    68,743.47x = 103,113.32 × 21,995.67
  4. Step 4: Simplify right side
    68,743.47x = 2,268,046,449.35
  5. Step 5: Solve for x
    x = 2,268,046,449.35/68,743.47
  6. Step 6: Final answer
    x = 32,992.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.