Home / 47,987.80-71,982.42-18,407.32

Finding the Fourth Proportional to 47,987.80, 71,982.42 and 18,407.32

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Solution

The fourth proportional to 47,987.80, 71,982.42 and 18,407.32 is: 27,611.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,987.80 : 71,982.42 = 18,407.32 : x
  2. Step 2: Convert to fraction form
    47,987.80/71,982.42 = 18,407.32/x
  3. Step 3: Cross multiply
    47,987.80x = 71,982.42 × 18,407.32
  4. Step 4: Simplify right side
    47,987.80x = 1,325,003,439.31
  5. Step 5: Solve for x
    x = 1,325,003,439.31/47,987.80
  6. Step 6: Final answer
    x = 27,611.26

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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.