Home / 45,428.40-68,161.50-20,451.24

Finding the Fourth Proportional to 45,428.40, 68,161.50 and 20,451.24

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Solution

The fourth proportional to 45,428.40, 68,161.50 and 20,451.24 is: 30,685.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,428.40 : 68,161.50 = 20,451.24 : x
  2. Step 2: Convert to fraction form
    45,428.40/68,161.50 = 20,451.24/x
  3. Step 3: Cross multiply
    45,428.40x = 68,161.50 × 20,451.24
  4. Step 4: Simplify right side
    45,428.40x = 1,393,987,195.26
  5. Step 5: Solve for x
    x = 1,393,987,195.26/45,428.40
  6. Step 6: Final answer
    x = 30,685.37

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1.5x scale

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.