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Finding the Fourth Proportional to 68,390.13, 94,394.13 and 40,104.93

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Solution

The fourth proportional to 68,390.13, 94,394.13 and 40,104.93 is: 55,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,390.13 : 94,394.13 = 40,104.93 : x
  2. Step 2: Convert to fraction form
    68,390.13/94,394.13 = 40,104.93/x
  3. Step 3: Cross multiply
    68,390.13x = 94,394.13 × 40,104.93
  4. Step 4: Simplify right side
    68,390.13x = 3,785,669,976.06
  5. Step 5: Solve for x
    x = 3,785,669,976.06/68,390.13
  6. Step 6: Final answer
    x = 55,354.04

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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.