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Finding the Fourth Proportional to 172,946.72, 259,427.02 and 54,618.09

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Solution

The fourth proportional to 172,946.72, 259,427.02 and 54,618.09 is: 81,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,946.72 : 259,427.02 = 54,618.09 : x
  2. Step 2: Convert to fraction form
    172,946.72/259,427.02 = 54,618.09/x
  3. Step 3: Cross multiply
    172,946.72x = 259,427.02 × 54,618.09
  4. Step 4: Simplify right side
    172,946.72x = 14,169,408,326.79
  5. Step 5: Solve for x
    x = 14,169,408,326.79/172,946.72
  6. Step 6: Final answer
    x = 81,929.33

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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.