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Finding the Fourth Proportional to 68,103.72, 102,165.18 and 28,636.20

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Solution

The fourth proportional to 68,103.72, 102,165.18 and 28,636.20 is: 42,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,103.72 : 102,165.18 = 28,636.20 : x
  2. Step 2: Convert to fraction form
    68,103.72/102,165.18 = 28,636.20/x
  3. Step 3: Cross multiply
    68,103.72x = 102,165.18 × 28,636.20
  4. Step 4: Simplify right side
    68,103.72x = 2,925,622,527.52
  5. Step 5: Solve for x
    x = 2,925,622,527.52/68,103.72
  6. Step 6: Final answer
    x = 42,958.34

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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.