Home / 55,611.15-83,421.35-18,170.43

Finding the Fourth Proportional to 55,611.15, 83,421.35 and 18,170.43

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Solution

The fourth proportional to 55,611.15, 83,421.35 and 18,170.43 is: 27,257.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,611.15 : 83,421.35 = 18,170.43 : x
  2. Step 2: Convert to fraction form
    55,611.15/83,421.35 = 18,170.43/x
  3. Step 3: Cross multiply
    55,611.15x = 83,421.35 × 18,170.43
  4. Step 4: Simplify right side
    55,611.15x = 1,515,801,709.83
  5. Step 5: Solve for x
    x = 1,515,801,709.83/55,611.15
  6. Step 6: Final answer
    x = 27,257.15

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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.