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Finding the Fourth Proportional to 39,458.40, 59,072.40 and 35,311.20

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Solution

The fourth proportional to 39,458.40, 59,072.40 and 35,311.20 is: 52,863.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,458.40 : 59,072.40 = 35,311.20 : x
  2. Step 2: Convert to fraction form
    39,458.40/59,072.40 = 35,311.20/x
  3. Step 3: Cross multiply
    39,458.40x = 59,072.40 × 35,311.20
  4. Step 4: Simplify right side
    39,458.40x = 2,085,917,330.88
  5. Step 5: Solve for x
    x = 2,085,917,330.88/39,458.40
  6. Step 6: Final answer
    x = 52,863.71

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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.