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Finding the Fourth Proportional to 72,616.40, 108,967.22 and 30,493.23

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Solution

The fourth proportional to 72,616.40, 108,967.22 and 30,493.23 is: 45,757.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,616.40 : 108,967.22 = 30,493.23 : x
  2. Step 2: Convert to fraction form
    72,616.40/108,967.22 = 30,493.23/x
  3. Step 3: Cross multiply
    72,616.40x = 108,967.22 × 30,493.23
  4. Step 4: Simplify right side
    72,616.40x = 3,322,762,578.15
  5. Step 5: Solve for x
    x = 3,322,762,578.15/72,616.40
  6. Step 6: Final answer
    x = 45,757.75

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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.