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Finding the Fourth Proportional to 39,772.80, 59,680.80 and 16,401.60

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Solution

The fourth proportional to 39,772.80, 59,680.80 and 16,401.60 is: 24,611.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,772.80 : 59,680.80 = 16,401.60 : x
  2. Step 2: Convert to fraction form
    39,772.80/59,680.80 = 16,401.60/x
  3. Step 3: Cross multiply
    39,772.80x = 59,680.80 × 16,401.60
  4. Step 4: Simplify right side
    39,772.80x = 978,860,609.28
  5. Step 5: Solve for x
    x = 978,860,609.28/39,772.80
  6. Step 6: Final answer
    x = 24,611.31

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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.