Home / 78,568.38-117,849.40-19,402.54

Finding the Fourth Proportional to 78,568.38, 117,849.40 and 19,402.54

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Solution

The fourth proportional to 78,568.38, 117,849.40 and 19,402.54 is: 29,103.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,568.38 : 117,849.40 = 19,402.54 : x
  2. Step 2: Convert to fraction form
    78,568.38/117,849.40 = 19,402.54/x
  3. Step 3: Cross multiply
    78,568.38x = 117,849.40 × 19,402.54
  4. Step 4: Simplify right side
    78,568.38x = 2,286,577,354.35
  5. Step 5: Solve for x
    x = 2,286,577,354.35/78,568.38
  6. Step 6: Final answer
    x = 29,103.02

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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.