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Finding the Fourth Proportional to 68,720.70, 103,085.85 and 27,162.30

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Solution

The fourth proportional to 68,720.70, 103,085.85 and 27,162.30 is: 40,745.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,720.70 : 103,085.85 = 27,162.30 : x
  2. Step 2: Convert to fraction form
    68,720.70/103,085.85 = 27,162.30/x
  3. Step 3: Cross multiply
    68,720.70x = 103,085.85 × 27,162.30
  4. Step 4: Simplify right side
    68,720.70x = 2,800,048,783.46
  5. Step 5: Solve for x
    x = 2,800,048,783.46/68,720.70
  6. Step 6: Final answer
    x = 40,745.35

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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.