Home / 43,685.58-65,517.54-18,722.80

Finding the Fourth Proportional to 43,685.58, 65,517.54 and 18,722.80

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Solution

The fourth proportional to 43,685.58, 65,517.54 and 18,722.80 is: 28,079.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,685.58 : 65,517.54 = 18,722.80 : x
  2. Step 2: Convert to fraction form
    43,685.58/65,517.54 = 18,722.80/x
  3. Step 3: Cross multiply
    43,685.58x = 65,517.54 × 18,722.80
  4. Step 4: Simplify right side
    43,685.58x = 1,226,671,797.91
  5. Step 5: Solve for x
    x = 1,226,671,797.91/43,685.58
  6. Step 6: Final answer
    x = 28,079.56

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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.