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Finding the Fourth Proportional to 172,876.52, 259,314.82 and 54,557.08

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Solution

The fourth proportional to 172,876.52, 259,314.82 and 54,557.08 is: 81,835.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,876.52 : 259,314.82 = 54,557.08 : x
  2. Step 2: Convert to fraction form
    172,876.52/259,314.82 = 54,557.08/x
  3. Step 3: Cross multiply
    172,876.52x = 259,314.82 × 54,557.08
  4. Step 4: Simplify right side
    172,876.52x = 14,147,459,379.93
  5. Step 5: Solve for x
    x = 14,147,459,379.93/172,876.52
  6. Step 6: Final answer
    x = 81,835.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.