Home / 212,780.05-319,181.01-55,009.87

Finding the Fourth Proportional to 212,780.05, 319,181.01 and 55,009.87

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Solution

The fourth proportional to 212,780.05, 319,181.01 and 55,009.87 is: 82,517.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,780.05 : 319,181.01 = 55,009.87 : x
  2. Step 2: Convert to fraction form
    212,780.05/319,181.01 = 55,009.87/x
  3. Step 3: Cross multiply
    212,780.05x = 319,181.01 × 55,009.87
  4. Step 4: Simplify right side
    212,780.05x = 17,558,104,862.33
  5. Step 5: Solve for x
    x = 17,558,104,862.33/212,780.05
  6. Step 6: Final answer
    x = 82,517.63

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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.