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Finding the Fourth Proportional to 68,350.40, 102,525.60 and 38,859.20

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Solution

The fourth proportional to 68,350.40, 102,525.60 and 38,859.20 is: 58,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,350.40 : 102,525.60 = 38,859.20 : x
  2. Step 2: Convert to fraction form
    68,350.40/102,525.60 = 38,859.20/x
  3. Step 3: Cross multiply
    68,350.40x = 102,525.60 × 38,859.20
  4. Step 4: Simplify right side
    68,350.40x = 3,984,062,795.52
  5. Step 5: Solve for x
    x = 3,984,062,795.52/68,350.40
  6. Step 6: Final answer
    x = 58,288.80

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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.