Home / 39,985.78-59,930.96-18,609.73

Finding the Fourth Proportional to 39,985.78, 59,930.96 and 18,609.73

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Solution

The fourth proportional to 39,985.78, 59,930.96 and 18,609.73 is: 27,892.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.78 : 59,930.96 = 18,609.73 : x
  2. Step 2: Convert to fraction form
    39,985.78/59,930.96 = 18,609.73/x
  3. Step 3: Cross multiply
    39,985.78x = 59,930.96 × 18,609.73
  4. Step 4: Simplify right side
    39,985.78x = 1,115,298,741.36
  5. Step 5: Solve for x
    x = 1,115,298,741.36/39,985.78
  6. Step 6: Final answer
    x = 27,892.38

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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.