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Finding the Fourth Proportional to 40,306.80, 60,438.60 and 16,906.80

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Solution

The fourth proportional to 40,306.80, 60,438.60 and 16,906.80 is: 25,351.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,306.80 : 60,438.60 = 16,906.80 : x
  2. Step 2: Convert to fraction form
    40,306.80/60,438.60 = 16,906.80/x
  3. Step 3: Cross multiply
    40,306.80x = 60,438.60 × 16,906.80
  4. Step 4: Simplify right side
    40,306.80x = 1,021,823,322.48
  5. Step 5: Solve for x
    x = 1,021,823,322.48/40,306.80
  6. Step 6: Final answer
    x = 25,351.14

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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.