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Finding the Fourth Proportional to 68,908.80, 95,104.50 and 42,066.90

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Solution

The fourth proportional to 68,908.80, 95,104.50 and 42,066.90 is: 58,058.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,908.80 : 95,104.50 = 42,066.90 : x
  2. Step 2: Convert to fraction form
    68,908.80/95,104.50 = 42,066.90/x
  3. Step 3: Cross multiply
    68,908.80x = 95,104.50 × 42,066.90
  4. Step 4: Simplify right side
    68,908.80x = 4,000,751,491.05
  5. Step 5: Solve for x
    x = 4,000,751,491.05/68,908.80
  6. Step 6: Final answer
    x = 58,058.64

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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.