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Finding the Fourth Proportional to 113,356.80, 170,029.80 and 38,469.60

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Solution

The fourth proportional to 113,356.80, 170,029.80 and 38,469.60 is: 57,702.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,356.80 : 170,029.80 = 38,469.60 : x
  2. Step 2: Convert to fraction form
    113,356.80/170,029.80 = 38,469.60/x
  3. Step 3: Cross multiply
    113,356.80x = 170,029.80 × 38,469.60
  4. Step 4: Simplify right side
    113,356.80x = 6,540,978,394.08
  5. Step 5: Solve for x
    x = 6,540,978,394.08/113,356.80
  6. Step 6: Final answer
    x = 57,702.57

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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.