Home / 47,711.80-71,540.70-18,130.60

Finding the Fourth Proportional to 47,711.80, 71,540.70 and 18,130.60

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Solution

The fourth proportional to 47,711.80, 71,540.70 and 18,130.60 is: 27,185.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,711.80 : 71,540.70 = 18,130.60 : x
  2. Step 2: Convert to fraction form
    47,711.80/71,540.70 = 18,130.60/x
  3. Step 3: Cross multiply
    47,711.80x = 71,540.70 × 18,130.60
  4. Step 4: Simplify right side
    47,711.80x = 1,297,075,815.42
  5. Step 5: Solve for x
    x = 1,297,075,815.42/47,711.80
  6. Step 6: Final answer
    x = 27,185.64

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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.