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Finding the Fourth Proportional to 68,354.92, 94,339.30 and 40,069.80

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Solution

The fourth proportional to 68,354.92, 94,339.30 and 40,069.80 is: 55,301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,354.92 : 94,339.30 = 40,069.80 : x
  2. Step 2: Convert to fraction form
    68,354.92/94,339.30 = 40,069.80/x
  3. Step 3: Cross multiply
    68,354.92x = 94,339.30 × 40,069.80
  4. Step 4: Simplify right side
    68,354.92x = 3,780,156,883.14
  5. Step 5: Solve for x
    x = 3,780,156,883.14/68,354.92
  6. Step 6: Final answer
    x = 55,301.90

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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.