Home / 43,780.74-65,664.56-12,187.50

Finding the Fourth Proportional to 43,780.74, 65,664.56 and 12,187.50

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Solution

The fourth proportional to 43,780.74, 65,664.56 and 12,187.50 is: 18,279.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,780.74 : 65,664.56 = 12,187.50 : x
  2. Step 2: Convert to fraction form
    43,780.74/65,664.56 = 12,187.50/x
  3. Step 3: Cross multiply
    43,780.74x = 65,664.56 × 12,187.50
  4. Step 4: Simplify right side
    43,780.74x = 800,286,825
  5. Step 5: Solve for x
    x = 800,286,825/43,780.74
  6. Step 6: Final answer
    x = 18,279.43

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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.