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Finding the Fourth Proportional to 68,348.68, 94,321.30 and 40,054.40

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Solution

The fourth proportional to 68,348.68, 94,321.30 and 40,054.40 is: 55,275.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,348.68 : 94,321.30 = 40,054.40 : x
  2. Step 2: Convert to fraction form
    68,348.68/94,321.30 = 40,054.40/x
  3. Step 3: Cross multiply
    68,348.68x = 94,321.30 × 40,054.40
  4. Step 4: Simplify right side
    68,348.68x = 3,777,983,078.72
  5. Step 5: Solve for x
    x = 3,777,983,078.72/68,348.68
  6. Step 6: Final answer
    x = 55,275.14

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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.