Home / 212,781.05-319,182.51-55,010.87

Finding the Fourth Proportional to 212,781.05, 319,182.51 and 55,010.87

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Solution

The fourth proportional to 212,781.05, 319,182.51 and 55,010.87 is: 82,519.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,781.05 : 319,182.51 = 55,010.87 : x
  2. Step 2: Convert to fraction form
    212,781.05/319,182.51 = 55,010.87/x
  3. Step 3: Cross multiply
    212,781.05x = 319,182.51 × 55,010.87
  4. Step 4: Simplify right side
    212,781.05x = 17,558,507,563.88
  5. Step 5: Solve for x
    x = 17,558,507,563.88/212,781.05
  6. Step 6: Final answer
    x = 82,519.13

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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.