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Finding the Fourth Proportional to 68,950.78, 95,162.34 and 42,108.86

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Solution

The fourth proportional to 68,950.78, 95,162.34 and 42,108.86 is: 58,116.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,950.78 : 95,162.34 = 42,108.86 : x
  2. Step 2: Convert to fraction form
    68,950.78/95,162.34 = 42,108.86/x
  3. Step 3: Cross multiply
    68,950.78x = 95,162.34 × 42,108.86
  4. Step 4: Simplify right side
    68,950.78x = 4,007,177,652.33
  5. Step 5: Solve for x
    x = 4,007,177,652.33/68,950.78
  6. Step 6: Final answer
    x = 58,116.49

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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.