Home / 43,939.80-65,862.45-18,991.67

Finding the Fourth Proportional to 43,939.80, 65,862.45 and 18,991.67

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Solution

The fourth proportional to 43,939.80, 65,862.45 and 18,991.67 is: 28,467.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,939.80 : 65,862.45 = 18,991.67 : x
  2. Step 2: Convert to fraction form
    43,939.80/65,862.45 = 18,991.67/x
  3. Step 3: Cross multiply
    43,939.80x = 65,862.45 × 18,991.67
  4. Step 4: Simplify right side
    43,939.80x = 1,250,837,586.48
  5. Step 5: Solve for x
    x = 1,250,837,586.48/43,939.80
  6. Step 6: Final answer
    x = 28,467.08

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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.