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Finding the Fourth Proportional to 172,877.76, 259,316.69 and 54,558.36

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Solution

The fourth proportional to 172,877.76, 259,316.69 and 54,558.36 is: 81,837.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,877.76 : 259,316.69 = 54,558.36 : x
  2. Step 2: Convert to fraction form
    172,877.76/259,316.69 = 54,558.36/x
  3. Step 3: Cross multiply
    172,877.76x = 259,316.69 × 54,558.36
  4. Step 4: Simplify right side
    172,877.76x = 14,147,893,054.24
  5. Step 5: Solve for x
    x = 14,147,893,054.24/172,877.76
  6. Step 6: Final answer
    x = 81,837.55

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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.