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Finding the Fourth Proportional to 68,690.70, 103,040.85 and 27,132.30

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Solution

The fourth proportional to 68,690.70, 103,040.85 and 27,132.30 is: 40,700.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,690.70 : 103,040.85 = 27,132.30 : x
  2. Step 2: Convert to fraction form
    68,690.70/103,040.85 = 27,132.30/x
  3. Step 3: Cross multiply
    68,690.70x = 103,040.85 × 27,132.30
  4. Step 4: Simplify right side
    68,690.70x = 2,795,735,254.46
  5. Step 5: Solve for x
    x = 2,795,735,254.46/68,690.70
  6. Step 6: Final answer
    x = 40,700.35

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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.