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Finding the Fourth Proportional to 85,872.66, 118,481.85 and 49,565.22

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Solution

The fourth proportional to 85,872.66, 118,481.85 and 49,565.22 is: 68,387.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,872.66 : 118,481.85 = 49,565.22 : x
  2. Step 2: Convert to fraction form
    85,872.66/118,481.85 = 49,565.22/x
  3. Step 3: Cross multiply
    85,872.66x = 118,481.85 × 49,565.22
  4. Step 4: Simplify right side
    85,872.66x = 5,872,578,961.26
  5. Step 5: Solve for x
    x = 5,872,578,961.26/85,872.66
  6. Step 6: Final answer
    x = 68,387.06

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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.