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Finding the Fourth Proportional to 68,239.20, 102,464.40 and 37,135.20

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Solution

The fourth proportional to 68,239.20, 102,464.40 and 37,135.20 is: 55,760.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,239.20 : 102,464.40 = 37,135.20 : x
  2. Step 2: Convert to fraction form
    68,239.20/102,464.40 = 37,135.20/x
  3. Step 3: Cross multiply
    68,239.20x = 102,464.40 × 37,135.20
  4. Step 4: Simplify right side
    68,239.20x = 3,805,035,986.88
  5. Step 5: Solve for x
    x = 3,805,035,986.88/68,239.20
  6. Step 6: Final answer
    x = 55,760.27

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1.5x scale

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.