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Finding the Fourth Proportional to 68,905.66, 95,104.62 and 42,042.40

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Solution

The fourth proportional to 68,905.66, 95,104.62 and 42,042.40 is: 58,027.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,905.66 : 95,104.62 = 42,042.40 : x
  2. Step 2: Convert to fraction form
    68,905.66/95,104.62 = 42,042.40/x
  3. Step 3: Cross multiply
    68,905.66x = 95,104.62 × 42,042.40
  4. Step 4: Simplify right side
    68,905.66x = 3,998,426,475.89
  5. Step 5: Solve for x
    x = 3,998,426,475.89/68,905.66
  6. Step 6: Final answer
    x = 58,027.55

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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.