Home / 45,021.15-67,540.77-13,431.69

Finding the Fourth Proportional to 45,021.15, 67,540.77 and 13,431.69

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Solution

The fourth proportional to 45,021.15, 67,540.77 and 13,431.69 is: 20,150.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,021.15 : 67,540.77 = 13,431.69 : x
  2. Step 2: Convert to fraction form
    45,021.15/67,540.77 = 13,431.69/x
  3. Step 3: Cross multiply
    45,021.15x = 67,540.77 × 13,431.69
  4. Step 4: Simplify right side
    45,021.15x = 907,186,685.00
  5. Step 5: Solve for x
    x = 907,186,685.00/45,021.15
  6. Step 6: Final answer
    x = 20,150.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.