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Finding the Fourth Proportional to 39,868.80, 59,781.60 and 16,468.80

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Solution

The fourth proportional to 39,868.80, 59,781.60 and 16,468.80 is: 24,694.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,868.80 : 59,781.60 = 16,468.80 : x
  2. Step 2: Convert to fraction form
    39,868.80/59,781.60 = 16,468.80/x
  3. Step 3: Cross multiply
    39,868.80x = 59,781.60 × 16,468.80
  4. Step 4: Simplify right side
    39,868.80x = 984,531,214.08
  5. Step 5: Solve for x
    x = 984,531,214.08/39,868.80
  6. Step 6: Final answer
    x = 24,694.28

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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.