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Finding the Fourth Proportional to 68,835.78, 94,984.92 and 40,536

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Solution

The fourth proportional to 68,835.78, 94,984.92 and 40,536 is: 55,934.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,835.78 : 94,984.92 = 40,536 : x
  2. Step 2: Convert to fraction form
    68,835.78/94,984.92 = 40,536/x
  3. Step 3: Cross multiply
    68,835.78x = 94,984.92 × 40,536
  4. Step 4: Simplify right side
    68,835.78x = 3,850,308,717.12
  5. Step 5: Solve for x
    x = 3,850,308,717.12/68,835.78
  6. Step 6: Final answer
    x = 55,934.70

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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.