Home / 47,728.80-71,593.20-30,218.40

Finding the Fourth Proportional to 47,728.80, 71,593.20 and 30,218.40

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Solution

The fourth proportional to 47,728.80, 71,593.20 and 30,218.40 is: 45,327.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,728.80 : 71,593.20 = 30,218.40 : x
  2. Step 2: Convert to fraction form
    47,728.80/71,593.20 = 30,218.40/x
  3. Step 3: Cross multiply
    47,728.80x = 71,593.20 × 30,218.40
  4. Step 4: Simplify right side
    47,728.80x = 2,163,431,954.88
  5. Step 5: Solve for x
    x = 2,163,431,954.88/47,728.80
  6. Step 6: Final answer
    x = 45,327.60

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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.